Using a Garden Rig-a-ma-jig, and reloading the world, will spawn one with the same percentage at 0,0
I discovered this bug after finding three Rigamajigs stacked on top of eachother in a random spot with 75%, 50% and 25% durability respectively.
Note: I don't actually know if the coordinates for the items are ACTUALLY 0,0. It's more a guess on my part going off of other bug reports in the past.
1. Use the Garden Rig-a-ma-jig
2. Exit the world
3. Go back in
4. use c_gonext("farm_plow_item")
5. You should see some freaky stuff