u/Ginger-snaped

I'm a YA librarian and I have about $250 to spend in my budget by the end of June. I'm using to buy some other things, but I also want to start a monthly craft program and I'm wondering if anyone has ideas on what supplies to get? I'm thinking paint, some decent markers, air dry clay, construction paper, and maybe some junk journal supplies like washi tape? I'm really just looking for ideas on any supplies that would be nice to have on hand for crafts for teens and displays in the YA area.

Side note: does anyone have any suggestions for good sticky tape to use for displays? My decorations always fall off the display shelf.