Air only goes on if we're having a stretch of really hot and humid air. Both my mom and I dislike air conditioning so we have box fans, ceiling fans and tower fans all over the house. The dogs have learned to lay in the breeze and they're all fine.
As for toys, the girls aren't much for them anymore altho Smidgen has one she will get out of the basket on days when she feels she hasn't gotten enough exercise chasing the cat around. Right before dinner time, Smidgen will case Widget up one staircase, over and down the other while the others bark and sometimes lung at them whizzing by. As soon as I start towards the kitchen all five of them (3 Cavaliers and 2 cats) rush to their places in the kitchen to wait to be served their dinner.
Quite a swing between an Aussie and a JRT. A working breed vs a terrier. You'll need good fencing either way.