This darling inflatable gelato ice cream stand toy (via Amazon) can be used both indoors and out. It's intended for kids aged two to six. Inside, it's a playhouse, outside, it's a baby splash pool. (Note that for safety reasons it shouldn't be used INSIDE a swimming pool. It's not a flotation device).
I'd love to set this up in my yard for kids to play this summer while eating ice cream I make for them and splashing around in my sprinklers. However, I'm not sure when our coronavirus situation will permit us to invite people over to the house. So I might just ship this to my youngest nephew so he can enjoy it without me. Maybe his mom will send pics and videos of him playing with it this summer!