This page describes a project, which is just beginning, of converting an old gasoline powered Smith air compressor on trailer, into a portable grill on trailer. I especially liked that this trailer already comes with a pintle hitch, since this is what my truck has on the receiver.
I bought it for $50 from a local company. Whie the trailer seems to be in a working condition, the engine appears to be beyond its useful life and is missing the starter. I have no interest in repairing this engine, as I know this to be a total waste of time. Meaning that in the end I usually succeed, but it takes way too much time.