Thanks for the feedback! What items in particular did you feel you could jump on that didn't? To my knowledge, the only items I deliberately didn't put collision on were: small paintings, small crates (the reason for this is that when we moved to a 32x32 grid map it didn't allow us to place them more precisely, they had collisions at one point) and lastly the bottom portions of the shelves, maybe that's the one that caused the most confusion, perhaps making the top different is a better approach.