Choice #1 - Knit an afghan with acrylic worsted weight yarn. This would make it easier to machine wash/dry. We have 6 people in our house and spills happen sometimes!!
Choice #2 - Knit it in 100% wool . This would make it warmer but it wouldn’t be as easy to machine wash/dry. I’ve always wanted to use wool, but maybe an afghan would cost more $$ than I’ve got.
PLEASE let me know what you would do in my shoes!!