I noticed a trivet at Aldi going for quite cheap and picked one up. My understanding of a trivet is that it's something you use to diffuse the power of a burner however, the one I got seems to be made to put hot pans and pots on. There are no instructions on the packaging however, so I'm not sure.
The trivet I purchased can be seen in the picture below, it's the round one. It's cast iron, enameled all around. I was wondering if something like that could be used on a gas stove?
Edit: Assuming I removed the thin layer of rubber coating on the feet of course.