I should note that if something goes into the garage, it is highly likely I will not remember to water it. So if they need water in their dark, cool spot in the garage, please tell me!!!

Also I forgot one. I have a Crimson Queen Japanese Maple that is badly stressed from the heat. It dropped almost all its leaves early. It has maybe one branch with leaves right now that lasted long enough to actually turn red. Would it help the plant to bring it indoors and pamper it over the winter, maybe pot it up to a size larger pot, or woudl it be better off being allowed to go dormant and rest?

The Crimson Queen - I would get that in the ground ASAP, so its roots can grow over the winter. If you're going to keep it in a decorative pot, I'd put it in a larger pot then overwinter it outside in a protected area.

Then here's my take on your other plants:
Plumeria - frost-free but dormant - your garage if it's frost free
Small bougainvillea - frost-free but dormant - your garage if it's frost free
Pot of Autumn Joy sedum - outside
Pot of succulents such as aloe, Mother-of-Millions, Christmas sedum - west facing window or grow lights
Dwarf Pomegranate (clearance rescue) - outdoors but protected
Dwarf Bottlebrush (clearance rescue) - I'm not familiar with the care for this
Geranium - frost-free but dormant - your garage if it's frost free
Pothos - north window
Massive hibiscus - not familiar with its care - but I think you'd want to give it as much light as possible and keep it growing - grow lights?
Pot of nasturtium - outdoors but protected from heavy freezes - maybe bring into the garage then.

JMO.

Lin

get The Dwarf Bottle Brush(Little Johnny) in the ground try not to disturb the root system to much, they are cold hardy here in San Antonio, I have never had to cover mine and the roots will be able to establish themselves in the ground.

I'm not in San Antonio, though - I'm in DFW. It's quite a difference! The guy at Calloway's suggested overwintering it indoors before planting it next spring, since it wouldn't have time to establish before the first frost, which could be anytime now.