DIY Perler Bead Hair Bows Tutorial from Hello Whimsy Blog here. Perler beads are so cheap and you can iron them together to make pins, coasters, etc… This is a really good post on using Perler beads.
DIY Cardboard Loom Weaving Tutorial from If You Want a Thing Done Well, Do It Yourself here. Really easy DIY that you can set up for your kids. This is how I learned basic weaving as a child, then going on to weave on a full size loom.