There were two spanking paddles in my childhood.
The first paddle was used from age 10. It was originally a paddleball paddle that my brother got some time earlier as a birthday gift. After the rubber and the ball broke off, my father repurposed it as a parenting tool. It was not one of those flimsy paddleball paddles, but a thicker solid one, and it packed a good wallop and stung and hurt beyond belief on a 10-11 yr. old's bare bottom. The first spanking I got with it was quite a shock and an eye-opener about what a spanking can truly be, and I remember this spanking vividly till this day like it was yesterday. There are also other reasons why I remember it, but the first-ever feel of the paddle on my bare bottom and the effect it produced was certainly one of the reasons.
The paddleball paddle was in use for about a year, however when I was 11 it was replaced with a "proper" spanking paddle. Why and how this happened is a separate story, which I won't delve into here. The new "proper" spanking paddle was homemade and was inherited by dad from one of his older cousins whose kids were grown up by then. They were doing a house cleanup and handed it over to dad saying "our kids are grown up now, but you are going to need it to raise yours".
The new paddle was not all that much larger than the paddleball paddle, best I can remember it (and my memories of it are very vivid) about 13", and just about the same thickness as the old paddleball paddle, I think 3/8" or perhaps a tad less, but it hurt even worse than the paddleball paddle, and certainly had more scare factor in it. Each spank with it covered most of the bottom and was imparting a breathtaking sting. Even though it was fairly thin, but it was made of solid wood and stung like crazy. It did not bruise of anything, just set my and my brother's bottoms totally on fire and made them red and sore, but THE STING! The sting was atrocious, and as dad kept laying on spank after a spank, I felt like I was simply about to jump out of my skin.
The new paddle also had a very graphical picture on it, of a boy being spanked bare bottom over a parental knee, with the boy crying hard, his bottom red and heat lines coming off it, and it also had embarrassing writings next to the picture. By its look and rubs in the paint the paddle looked fairly old, not decades old but easily 20 years old or so, and was obviously well-used on other kids' bottoms, probably more than one generation of kids, and now it was my and my brothers turn to be paddled with it.
Age 11-13 was my most spanked childhood years, especially 12-13, and the paddle saw a lot of use. I learned many tearful lessons over my dad's knee with that paddle, so it is a very memorable thing.
Other than the difference in size and increased spanking pain and sting the new paddle produced, there was another big difference between the paddles.
The old paddleball paddle looked nondescript. Nobody who did not know its true purpose and use in our house would not guess it was a spanking paddle. It looked just like a common toy paddle, just with the ball gone. Thus when my friends were around at our house, there was not too much of a risk of it being identified as a spanking paddle and cause an embarrassment. Of course, someone might wonder what a paddleball paddle with the ball gone was doing on top of the fridge, but still there was some distance from wondering about it to making a certain conclusion, so having the paddle somewhere in the house when my friends were around did not cause too much concern for me. Even if someone were to be too smart and make conclusions, I could always deny them, or in the absolutely worst case admit it was a spanking paddle, which would be bad, but not super-bad.
With the new "proper" paddle it was very different, because it had a picture and writings on it that not only clearly identified its purpose, but also were super-embarrassing. With that paddle in the house, I was totally mortified that my friends or other visitors (including my brother's friends) may see it. I thought I would die if any of my friends saw this paddle, and then of course other guys would learn about it too, and there would be no end to teasing. Not to mention the news of such a colorful item could well spread across the school, and may be even get to girls too, and I may become a target of unending mockery. I felt totally mortified.
My two best and closest friends knew about the paddle and saw it, because I trusted them and they also knew about my spankings just as I knew about theirs, especially my best friend. I trusted they would not tell anyone else. But I was totally mortified by a danger of anyone else seeing the paddle.
My brother and I took great efforts for the paddle to stay out of sight.
The paddle had a drawstring attached to its handle and its usual resting place in between its use was a wall closet in the hallway, where it was hanging on a nail behind the clothes.
I always took great care to make sure it was pushed well behind the clothes in the back, to reduce the danger of any of my friends seeing it.
On occasions when the paddle was to be used, sometimes my dad fetched it from the closet, and other times I was sent to fetch it myself for my own spanking. It was quite nerve-wracking having to go and fetch the paddle from the closet and carry it to dad. I remember well these walks of dread and shame being sent to fetch the paddle and then carrying it back to dad, for my own punishment.
The paddle was in use in our house until I was late 13, when one day Dad was spanking my brother, and the paddle chipped, apparently from all the stress it sustained over the years paddling kids bottoms. My dad used to say that "a boy's bottom does not break from a spanking" and "no boy's bottom ever broke from a good spanking". Ironically, perhaps no boy's bottom ever broke from a spanking, but boys bottoms did break the paddle. I guess every device has its MTBF (except may be boys' bottoms, according to my dad), and the stress of the spankings goes both ways.
Instead of replacing the paddle, Dad went to using the belt from that day on.