I can’t decide what to knit my dad for Father’s Day and I was wondering if I could get advice. 
The decision is between using Woolease worsted for some socks (I guess they would be like slipper socks, with a worsted weight, right?), or a hat.
The socks wouldn’t be that useful because they would be thick. But the hat is out of season. :?? I don’t think I have time to knit him socks with regular sock yarn (I’m a slow knitter and I only have about 20 minutes a day or so to knit in).
Which would you do and why? Please help me decide. I really want to give him a gift that’s useful.