Boring to make, but actually kind of exciting to have finished, because they have made a huge difference! Our house was built in 1919 and still has a lot of original windows, some of which are soooooo drafty. Every year I'd say "I ought to figure out to make some draft stoppers for those" but then I never got around to doing it. Finally, after a week of high winds coming up from the water, I did it.
I didn't bother to even look for any directions online, I'm sure there are plenty. But I just forged ahead and did what I thought would work -- and it did! I measured the windows and then cut rectangles that were the width of each window plus 1-1/2" long; and 7-1/2" wide. I used french seams for extra strength, and seamed the rectangles along the long edge and one short edge. Emily and I then filled them with play sand using a kitchen funnel (that was fun, if a little messy!), and then I rolled the open ends over, pinned them and then very carefully brought them back upstairs and sewed them closed. We put them in the windows and seriously, the temperature in the house climbed within just 2 or 3 hours.
Sewing hasn't been all boring though, Emily has her own machine now and has started making things! But more on that later. Ha ha, and I totally forgot, I made a new flannel robe from a vintage pattern for Evan...where is my brain? More on that later, too!