They have so much energy! They need to get it out but it's cold out and dark early. I keep trying to convince DH we need this for Christmas. It's indoor/outdoor, 7 ft, will fit them all, fully enclosed, and low to the ground. It will fit in the playroom downstairs, and it's only $119!
Update: we bought it last night! I think we're going to have it set up when they wake up Christmas morning!