Hi. I think there are no documented tool uses for magpies. I am not an expert but have followed this field from the sideline. They do recognise themselves in the mirror though! Published in PloS Biology this is the link to a commentary that puts it into a wider perspective: http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2517621/ and this is the paper http://www.plosbiology.org/article/info%3Adoi%2F10.1371%2Fjournal.pbio.0060202#pbio-0060202-g004

In addition this is a paper on Eurasian jays that discusses lack of tool use and could be useful to try and find some more information.

http://link.springer.com/article/10.1007/s10071-011-0379-4

Hope this satisfies the six-year old.. :)

There is a short note by McCormick (2007, Notornis 54:116-117) in which she reports on possible tool use by an Australian Magpie. On one occasion she observed an individual adult Magpie using a stick to probe into a hole in a tree and speculated that the bird was possibly using the stick as a foraging tool.