I think you can be creative in your trades that you have for caches. My kids also like the toys but we just visited one that was basically junk. What I did was list all the contents on the page for all to see. Everyone then has a choice to go, refill or not go. I find tons of things on clearance that are great for caching. Pencils, coins are good.. especially foreign ones, tons of stuff from the dollar store...and my personal favorite at the moment is giving old cd's that we don't want/need anymore. They still work fine.. just not our taste anymore.
