Cold hands at night

Now that our babies are rolling and transitioning out of swaddles, how do you mommies keep your baby’s hands warm at night? We set our thermostat to 69 at night, but when I feel my son’s exposed hands they feel like ice! We started using the Zipadee Zip at night, which has been wonderful, but I’m worried about what to do after he’s too big for the Zipadee. He’s already in the large size, so he’s not going to last much longer. Any advice for keeping his hands warm at night that doesn’t include raising the thermostat temp? Do any of your babies have this issue?