Perler Beads for the win! The key with an odd shape though is that the beads cannot be out there single, and not touching another bead.
Most kids will decide very fast what they want to make and for the ones who need a visual example. These beverage lids will save lives over summer! I always instruct them a few things, keeping it short and sweet so they have plenty of time to work.
It is also just a nice, laid-back lesson for them that other than organizing the supplies and doing the ironing and cleaning up, is easy to teach and they will come up with some amazing designs. Tell them to work from the center out, and it helps you not spill the beads off the base as much.
I have several bases and most came in a mixed set where are larger square bases, those are great for letting them create their own shape on. What a fun way to do some hands on learning creating a Perler bead alphabet.
You can pin it here. And these do look especially cute.
Ironing the Artwork Now for the ironing part — place a piece of the wax paper over the top of the beads and be sure it fits all the way across the beads.