Does anyone know where I can get a tow bar that I can keep in the plane for a Taildragger Maule M7? I do have the Maule Tailwheel.

Upgrade to a Scott TW and use a bogi bar from Airframes.

I have a Maule towbar that I bought from Maule Flight during the 2010 rebuild of my MX-7-180. It fits over the leaf spring ahead of the tail wheel housing and works pretty well on a Maule or Scott tail wheel. I'd be willing to sell it. PM me if you're interested.

It's kind of heavy compared to the Bogie Bar that I use with my ABI 3224A tail wheel. It doesn't work quite as easily as the Bogie Bar because it doesn't turn the tail wheel directly like the Bogie Bar does, but it works.

Best alternative if you have a Scott 3200 or ABI 3224A is the Bogie Bar. It's small, light, strong and easy to use. The collapsing handle makes it easy to stow in the airplane.