I want to buy cloth napkins for my sil for xmas and buy some for myself. What type of fabric is best? Also, what color do you think would work best? And how many would be ideal to have? My sil has three messy kids. I'd like to get her enough that she doesn't have to do laundry all the time. Also needs to be something that would wash well. For me I was thinking about just using some of our washcloths for now. Any suggestions?