Toys from trash...

I have been enjoying the re-learning of basic concepts... while making toys from trash for Aditya (my son), it definitely comes out of passion to do with kids, but I think it should be tried by every parent to do few experiments with their children -

Arvind Gupta Toys - http://www.arvindguptatoys.com/

It's a great source for trying simple - science concepts, origami & fun toys. I'm enjoying past few weeks...