StikkiWorks Stikki Clip is a better substitute to tacks, push pins, glue, tape and staples. Standard clip sticks to any surface and can be used over and over again. It removes with just a twist and the adhesive will not stain or damage surfaces and will never dry out. Waterproof and non-toxic. Use on wallboard, cinder block, brick, plaster, paneling, pegboard, concrete, metal, glass, plastic, wallpaper, tile and almost anything else. Pack of 20 clips.