My DS6 LOVES his ball - we got one about a year ago and loves watching tv or even doing computer sitting it. We also have a mini trampoline that we got from sports authority on sale after the holidays that we pull in and out of the garage - the favorite though is his scooter (which yes, we allow in the house since it is mostly tile flooring)....he loves to zoom around the open kitchen area/island while I throw out math facts for him to complete at the "toll" stops :-)