D.N.
I agree about kids being scared of characters in person that they love when on TV. For the jumpers, you have to have a lot of open space and very high ceilings. Most will warn you cannot have indoors because they have to be anchored. Would it be possible to instead setup small stations with age appropriate crafts and maybe some games? Usually the toddler age is happy just running around, especially since they burn out pretty quickly. We didn't start having activities/games until the kids were 4.