Indoor activities to beat the heat

Amber

I live in AZ, it's currently 110+ F here so no more parks etc. Just before sunrise it's in the high 80s so not much relief at night either.

LO isn't in daycare, husband is a SAHD and we are trying to think of ideas for summer fun. We have a membership to a kids museum, but he goes crazy there everyday. There are splash pads at a few parks, but the sun is intense. Most of the activities are limited to early morning or indoors.

What are y'all doing to beat the heat?