I cleaned Nikon D200 yesterday using 85% alcohol, Q-tip, and cotton rag.
The rubber grips are lifting off here and there. I put small pieces of electrical tape over the right-hand side grip where thumb rest.
Rubber grip repair
The maker uses “strong” double side tape, alcohol, a utility knife, with replacement grip.
“D200 grip” search on eBay brings sellers in China.
I found an interesting product, mouldable glue that turns into rubber.