Well I just received them today after ordering them from China in September through Amazon. In fact I couldn't work out what they were when the package arrived as I had forgotten I had ordered them.
Anyway out of 25, only 2 of them work. What do you expect, DH asks, when you only paid £1.07 including postage?!
I'm hardly going to send them back to China so into the bin they've gone and DS is one present down for his stocking.
Has anybody else had this problem? I know quite a few of you will have ordered them as I think I ordered them using a Mumsnet link.