The first hack is a very important one.
To prevent your pipes from freezing, let a little bit of water keep dripping from the faucet, but don’t let it just go down the drain. Take a clean container and catch the water in it and then use it to water your inside plants.
If you have a crawl space under your house. you can purchase insulation for your pipes to help keep them from freezing up.
For those of you that are new to trailer living, you should put a skirting around your trailer and you might consider putting the Styrofoam insulation on the backside of the skirting for even more protection from the cold. It will not only help with the pipes, but it will help some with the floors not being quite so cold. You can also use throw rugs to help keep the floors a little warmer.
If you are good at sewing or crocheting, and you cannot afford to purchase lined drapes, you might think about making covers for the windows for at night. It will help keep the warmth inside and the cold outside. These can be hung on sturdy tension rods if the covers are very heavy. These are held inside the windows by very strong springs.
If the covers are not very heavy, you may be ale to get by with the smaller extension rods. These hold really light weight curtains, or pieces of plastic just draped over them. You use small nails to secure them close to the woodwork on the window.
I have used light weight curtains, but they only helped a little bit to keep some of the cold from blowing in. What I liked the best was using sheets of very thick plastic. I used the kind commonly used for drop cloths when painting. I secured it with heavy duty shipping tape. I put it up at all of my windows except for the kitchen. I had to have at least one window that could be raised in case of a smoke emergency when cooking.
Besides putting plastic up at the windows, I also used weather stripping around my doors to keep the drafts out. That worked really well for me. The type I used was similar to the picture below in that it was a very thin metal strip that was also nailed to the door, it was sort of like tin, but it also had a strip of felt next to the wooden door frame right under the metal stripping. It was basically just the top piece that was nailed to the door frame after the felt was nailed to the door frame. That way, when the door closed, the piece of metal would rest on the felt strip that was attached to the door frame. It made a very tight seal. It had to be replaced every couple of years though, where different things would get caught on the door going in and out.
I hope these cold weather hacks help at least a little bit.