Play clinic exam table and other stuff.

Does anyone know of a good site or anywhere where one can get an exam table? and other play exam instruments?

Craig's List.

Try eBay, Craig's list and amazon. You would be surprised what you can find. They also have links to other sites.

If you're not too picky about having things like stirrups, a massage table would make a good impromptu exam table.

Hospital and medical supply stores would have real exam tables.

If you can find a local company which makes massage tables, you can ask if they can do one without the face hole. I did that and ended up with a simple, but nice, examination table.