If you have the eye-shaped gem, your next goal should be finding a way to upgrade it. See if you can find someone in Monster Town to help. You'll need the ability to fly though!
Hi, I've found myself in the same situation (except not so many tablets). What/Where is monster town? I've been everywhere, I think, and don't remember seeing that name pop up.
Aside from being stumped at this point I'm really enjoying the game. I've figured out what to do and haven't felt lost until now.