Now that I ride my bike around quite a bit, getting socks for Christmas is AWESOME!
Used to suck, though.
Couldn’t agree more. I rely on my Christmas sock restock 
Socks for sure. I wear out at least 3 pairs of work socks and bike socks in a year.
Also books. I’ve always liked reading but it’s harder to read a book rather than watch tv, but I’ve been getting a lot of value out of cycling books and that’s transferred to other books and I spend more hours reading then tv most days now. Not counting trainer hours, chads ability to read on the trainer hasn’t quite transferred to me.
As a former weight-weenie marathon runner who never bought below-ankle socks, I never turned them down as gifts. They may seem useless in the winter and perhaps a bit feminine, but they’re good on rainy days with less material to soak up water. One way to assert your masculinity is to return from a rainy-day run or ride soaked to the bone.
Meanwhile, if your wife was hinting that she’s ready to try something different, it doesn’t sound like she has a TrainerRoad subscription yet. (Power, not heart rate 
. ) Intervals are useful even for those who don’t compete. I’m saving one one-month TR referral for my wife, should she ever decide to try it, but I have one more available.