Turn a margarine container into a toilet paper dispenser for camping, hunting, etc. Sure does keep it dry for those wet-air summer mornings here in Iowa. We have multiples and just store all our camping rolls in them.
I use a little Lodge 5" square Wonder Skillet as a spoon rest.
Take a glass jar, remove the labels, wire brush the paint off the lid, install a knob on the lid, and fill with anything for a decorative knickknack.
Use a cast iron skillet as a burger/bacon press.
I know I have other dual-use ideas but my mind is kind of blank right now.
Anybody else have any dual-use ideas?