Trailer for a TC as a stopgap until getting a one ton?

It is pretty common. Google cabover camper on a trailer and you will see all sorts of set ups. As for a trailer built specifically for a TC I don't know if that exists but certainly can find or build one to work. A few reasons why are utility trailer tags are a whole lot cheaper than TT tags and it can make it easy to take the toys along and when the toys are unloaded you have a built in deck or dance floor.