"Floor-time"

The thought process started out along these lines:

"I think I'll make a little expansion for the guinea pigs, right on their cage. I can just do it for Floor Time only. That way, we just open the little gate and once a day they can have a whole extra place to run around. Then, at night, we can close it."

Wayullll...floor time all the time! Haha, we, uh, didn't close the gate, and now they have double the space of their already large cage. Because they neeeeeeeeeeeeeeeed it!