We've been experimenting with sewn circuits in the Tinkering Studio, and one thing we've noticed is that it's hard to test your circuit before you invest a lot of time sewing. To help with this, I made a set of sewn-circuit blocks that snap together with lengths of ribbon, inspired by our circuit boards, and Ryan's circuit cards.
We quickly realized you needed a way to make parallel circuits, so I added snaps to the middle of the ribbons.
I made blocks for all the basic components (a battery pack and leds), and I also made blocks for a few different switches and sensors.
I hope that this will be a useful prototyping tool for visitors making their own circuits in the Tinkering Studio, and that they might inspire them to think about circuits, and sewing, in a new way.