Courtesy of savvy shortcut website for modern living, Lifehacker, here are the top ways to stay warm this winter for less dough.  Some involve constructing genius DIY doohickeys, others tweaks on classics.

I like the machine that cycles absorbed solar heat through 180 empty cans of your favorite beverage.  Well, I’d let someone else actually “make” the device.

And powered longjohns?  Interesting and doable, but I’ll leave that one to the experts.