I made this flexible geometry toy based on one I saw in a learning store. You can bend it into different shapes, and it's fun.
Unfortunately, all I had on hand was some yarn to make the inside support.
I'm concerned that the yarn is eventually going to snap, or the knot is going to unravel. It's also not water-proof, so it might not be that great for extended kid use due to the messes they make.
What can I use instead?
I'd like something that:
- Is strong, so it doesn't snap
- Has some flex, so the toy can bend like it's supposed to
- Is somewhat waterproof
- Can easily be knotted in a way that won't unravel
- Be able to have at least 3 strands of it threaded through a 4mm wide straw
Here's the toy, to give you an idea of my requirements: