For Z1's 4th birthday we got her these Pyssla beads from IKEA. To be honest, I am not too sure why - she had done a shape with them in her pre-school the previous year and we were in IKEA a few weeks or days before her birthday and I had decided we should get something for her there so we got these.
Z1 decided she wanted to do this the day after Pumpkin Day. It's only the second time she has wanted to to them at all and I may have instigated the first time. I wasn't too keen this time - it's fiddly and with the potential for those tiny beads to spill and go everywhere. However, Z2 was asleep (again) and it was cold and wet outside so we hunkered down on the floor in our sitting room and started the fiddly business of Pyssla-ing.