My biggest supply is stickers. I have them all over the place, well I did. Seems I never have the right one. I am trying to not buy themes as much. I prefer the stickers that match the papers, but for now this is what I have.

The drawers are those multi colored ones in the cart. I labeled each drawer for a theme (the one shown is fall/halloween). It's nice to have, I just grab an entire drawer when I'm working on halloween cards or pages and I know exactly what I have to use. No more forgotten stickers!