I recently bought a new keyboard because my beloved old keyboard, that I used for years, was grotty beyond belief. Unfortunately, I struggled to find some of the special keys on my new keyboard, which was disconcerting since I am a touch typist. However, I found these small adhesive bumps on Amazon, and put them on strategic keys on my new keyboard. I am starting to become much happier with my new keyboard, and hopefully, won’t have to revert to using my old, grotty keyboard. (Bumps come in multiple sizes but these small ones seem to be working for my application.)