jury rig; jerrybuild, extemporize

Fix fast and cheap, but not in the best or most ideal way

They can. If it looks like the casters may damage the carpet, you can jury-rig it with cardboard or some other fix to prevent such damage.

The expression started during WWII for equipment patched together with German equipment. Jerry was American military slang for Germans.

Answer

The expression "jerry-rig(ged)" is a probable US corruption of a much older term from the days of sail, "jury rig(ged)" which meant the same thing, namely fixing something so one can get home, a makeshift repair, for instance a ship is dismasted, a replacement mast is rigged from a spare spar, a boom, the remains of the broken mast, or a smaller mast, depending what is available and what the crew is able to lift and lash into place.

The term "jerry rig" may also be a blending of "jerry-built" namely something shoddily or poorly made, and jury rig. The "jerry" has nothing to do with Germans, and in fact the slang term for German soldiers "Jerry" dates to WWI and is a British term.

The Man's a rig.

Nice rig, dude!

How will you rig the race this time, boss?