I first made duct tape bookmarks for Greta's Lalaloopsy Party this summer, but Greta and I found ourselves with an afternoon to craft and she decided she'd like to make all the kids in her class a bookmark. So that's exactly what we did.
For this project all you need is duct tape, some index cards or cardstock and a scissor.
Line up the side of the card with the duct tape and stick it to the tape.
Pull the duct tape back over the other side and trim to size.
And there you have a super easy bookmark craft for anyone and everyone.