when you have a lot of old yarn what can you do with it
You could donate it, people love to buy yarn at thrift stores, you could have a garage sale and sell it, you could also donate it to a school, they are always needing supplies. You could also make yarn mosaics or learn to knit or crochet or even macrame. So many creative things can be done with yarn.
Use it! Do you knit or crochet or macrame? How about craft projects? Want some? You can always donate too. Find an elementary school teacher, they will be extremely grateful.