I keep my Q 1200 in a Duffle Bag. A plastic Tote large enough to contain the grill was too big and wasted to much space.
I initially had a roadtrip that came with a lot more accessory options vs. the Weber Q including a nice wheeled storage bag.
Unfortunately the Roadtrip did not heat up so well.
The Weber Q works better however accessories including a storage container are lacking
Weber should make some sort of storage container, but all they have is a cover.
Keeping the smells contained helps keeps the critters/mice away. A nice charcoal smelling storage area is sure to attract critters.