A Place To Train

My WMA sparring partner and I have been working out in his back yard
for the last several months. It's been warm weather so that works out
OK most of the time. However, winter is fast on its way. Now we know
*all* about the advantages of "Environmental Training" but, let's be
honest, it sucks. No one really wants to train regularly in the snow,
rain, or sleet.

So, what are some ideas for finding an indoor location to train?

A friendly Dojo? Hard to find one that really wants to share. There
are plenty that want to rent you an evening space. $$$$$$$

What are the inexpensive options for a small group?

Peace favor your sword