This is absolutely the stupidest thing that I have done that I care to remember or tell anyone about. I re-made our futons.
When we got married, we were futon sleepers. MIL bought us two single futon sets (top and bottom), and we got some thin mattresses to go under. After a few years, my bones got pretty tired of sleeping on futons. The futons she bought were, apparently, good ones, but were so heavy, I hated to hang them out in the sun - which should be done regularly with futons - especially the bottom part - for any readers not familiar with futons.
So, I campaigned for a bed. A friend recommended a mattress rather than a bed, as we only have two 6-mat rooms. This way we could always prop the mattress up against the wall, and use the bedroom for other purposes. We did get the mattress, but the only time we prop it up against the wall is to vacuum, but, we are plenty comfortable, and walking around the bed at night, I have often been thankful that I haven't cracked my shin on a bed frame.
However, two single top futons on a double mattress (hereafter called bed) really don't work. I also hated comforters/duvets/futons that weren't really big enough for the bed, so I determined that we needed a queen sized futon. Therefore, I ordered a very expensive queen sized futon cover and proceeded to re-make our futons.
Did I happen to mention that these are down futons? With feathers? Well, I borrowed a friend's sewing machine and started in. Ryu remembers I did it in a day. And that he sneezed for a week. But, I think it took me longer.
First, (as if anyone else in this world would be so silly as to do this, but anyway,) I decided where to cut each futon (didn't want one half to be larger than the other. Why that matters with a futon cover hiding the whole thing, don't ask me!) to be equal in size. I also needed to make the futon longer, to fit the duvet cover.
Next, I sewed two parallel seams on either side of the cutting lines, hypothetically trapping those feathers from flying all around. I suppose it helped a lot, but, feathers are feathers! Then I cut.
Then, I sewed the uncut sides together down the middle, and a portion from one of the futons across the top to lengthen the futon. Finally, I used bias tape to cover the cut-feathers-are-trying-to-escape-edges, and added a lot of places to hook the duvet cover on to the futon (however, futons slip in their covers - what can I say?).

And put the cover on. I really really really don't recommend anyone else being so cheap or brave or foolish to ever try this. But, just so you know, someone has done it first!
Do you have any similar stories to share???