Nohohon Zoku (meaning 'Sunshine people', or 'Relaxation tribe') are Japanese solar powered desk ordements that gently nod from side to side go help relieve stress.
I'm not sure if it works, but I love these things!
I found the larger one in an op shop for $3 and couldn't figgure out what it was (the intructions and packaging being in Japanese) but eventually the internet told me. I thought there was no where that sold them here, but this morning I was walking past one of the local asian supermarkets had a whole bunch of imported stuff in the window, and the little pink Nohohon was one of them. I think it might be a fake though, seeing as there's so branding on the base or packaging, and it nods alot faster than the other one.
Aren't they awesome? XD