It sounds fun and if you get it going I'd be happy to contribute a few rows- But would it all be garter stitch? Or could a few people throw in a basket weave section, or slip stitches, or Feather and fan, or cables?? That would be interesting.... But I think the same needle should be used through out.
The one draw back to this is that the postage will increase as it's passed along so it could be expensive for those at the end of the line to participate. Also do you want it to be a washable blanket?? That really depends on the charity. In the US they want washable usually but foreign countries like afghans for Afghans want natural fibers.
Maybe you should make a poll for what charity...
May Peace Prevail on Earth.
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