I could write forever about the therapeutic benefits of crafting - but I'll spare you (for today anyway!). Being creative keeps your hands and your brain occupied and the finished results can give you a great sense of achievement.
There's no limit to the type of crafts you can do - sew, knit, paint, draw, papercraft, sculpt, construct - the choice is yours. Just enjoy it and remember you don't have to be an expert.
If you need some craft inspiration, check out the Laura Ashley blog for some great projects.