Dildoes in the shower - best lubes

I often use a suction cup dildo during my showers, but have not found a satisfactory lube. Water-based products rinse off way to quickly, and I know you shouldn't use silicone-based on silicone toys. Products like Albolene tend to leave slippery residue on the shower floor. I really enjoy this part of my daily ablutions but I need to resolve this particular issue.

Any suggestions will be greatly appreciated!

I have been using coconut oil, remains slippery for a long time and a little bit of warm water revives it.

I've usually used castille soap which is what I wash with.

I use organic glycerin soap or Vaseline. Vaseline is like a slow move lubricant, it is slippy and nice but no sudden or fast moves, also it makes the bottom of the tub slippy. J-Lube powder will last a bit longer than J-Lube water mix.