T.H.
What if you just made his gift a day to do nothing but watch TV. You could make his favorite foods or stock the fridge with things he likes and take the kids and leave him alone. That would be the best gift to my husband. My husband doesn't really get excited about gifts and honestly if we want something, we just buy it. For milestone birthdays I would normally suggest a trip but you listed why that wasn't a great option for you so if he likes TV a lot, I'd go with that.