I am a martial artist (Northern Chinese style, praying mantis to be exact) and I spend a LOT of time on a water bottle and heating pad – sometimes both at the same time. Knit Picks has a great post on knitting covers for hot water bottles:
Yes! Now stay with me and you will appreciate my logic.
Hot water bottle covers are small, portable knitting projects. Not heavy in your lap and easy to tote around while you are on vacation or just heading out for a picnic.
You can use up bits of yarn from projects you knit last fall and winter.
There are tons of fun designs – knitting and felting.