White wool and aida (Penbeagle TR26)

Hi all. I’m trying to locate some balls of white wool, and if possible some plastic embroidery aida. This year I’ve been tasked with getting our local community group, to make decorations for the Christmas tree at our parish church. I thought we could make some snow flakes to hang on the tree. I’m trying to do this as cheaply as possible as our group are all about recycling and reusing wherever possible. If anyone can help, I’d be most grateful ☺️