For their birthday each of the kids got a card from Geoffrey at Toys R Us with a $3 gift card in it. $3 at Toys R Us??? Nothing like a scam to get people in and spend some money and we were the suckers who went for it! After walking, yes we let them walk...crazier by the minute, through the store and playing with everything in sight they ended up getting hop balls. All four of them love sitting on them yelling "bouncy, bouncy" then making themselves fall off and laugh. It is hilarious!