Perler beads, ironing beads - whatever you want to call them, these delicious little thermoplastic suckers were one of the great loves of my childhood when I knew them by the brandname "Hama Beads". Basically they're cylindrical plastic beads you put on a pegboard in pretty patterns before running an iron over them, making them melt and bond.
Imagine my joy when I stumbled across a copyright law-dodging incarnation whilst on an Ikea escapade with a friend. That night I made a rather shoddy ring, two brooches...
... and a bunch of other random crap.
Here's to second childhoods.