Thank you all for your kind comments.
I used a roll of ordinary cotton wool, Bill. I've never heard of hobby snow fabric, but I'll look it up in the net to see if there's any local supplier so I can see some. I was surprised how realistic the cotton wool looked.
Thanks, Bill, comments on the snowplough conversion, Bill. The early Playmobil trucks (not the klicky ones) are a favourite of mine, the construction one especially. I've got two of them, one a trade with Little Jo and the one in the picture which I got on eBay. I hope to do some photos of my truck collection some time for PF.