My furnace has gone out ..Any suggestions on how to keep warm?

I'm so sorry to hear about the heater. If you can get like 2 oil radiators they are great to help heat. Just place one on each end of the house. Plus they aren't as dangerous as some of the space heaters. If you have any electric blankets that will help also. I know how cold it can get back there as I grew up in Minnesota. My mom, sister and daughter still live back there so I kinda keep track of the weather there.

Use lots of blankets and if you have some electic heaters that helps. Turn your lights on because they help heat your home to. I usually heat up my oven to everyonce in awhile to keep the kitchen warm. Let oven pre heat and then turn it off and open the door. It does in a pinch. I have been in that pickle more than once. It's not fun but you can get through it.

Do a lot of baking so the oven will warm the house a little.

I am sorry about your troubles. I live in a trailer too so I know its hard to get someone to fix the furnace. I have some tricks but mainly because I am cheap and try not to run the furnace much. Its holiday time, so why not do some baking. That always warms up the house. Or running the dryer, in the winter time my dryer is not vented outside, but if you do this put a stocking over the end to catch the lint. Also keep your curtains closed at night. Put a blanket up to the door to keep some cold air out. Any rooms that you are not using,keep the door shut or put a blanket up in the doorway. And wear warm socks and a hat if you can. the body loses more heat through the head and feet. If possible, go somewhere else at night. I use little electric heaters but I don't like them to run at night. And what a perfect excuse to drink a nice cup of hot chocolate. Good luck.