Okay here is a really really good way to make a homemade diaper, better than any other non sewed diaper I ever seen or tried in my younger days. It is pretty simple.....
1.)Obtain about 8-10 mens underwear briefs and put them on all on top of eachother. If your light (110 pounds or less) 8 will be plenty.
2.)Obtain the biggest and thickest panty pad (girls period pad of course) that you can. If you can not buy any for whatever reason, they can be found in pretty much any household with a female. So I am sure your mom or a sister has pads. So check out to see what they have. Even if they use tampons they still should have light pads. Try to get an absorbancy level that says heavy or super or overnight, cause they are the most absorbant ones. Then have your briefs on at about knees with the crotch hanging down and place the pad in the crotch area of the brief on the most inside (the first one you put on). Then of course pull up the 8-10 breifs up firmly with the pad between your legs.
So pretty much only two major steps. It is a really simple diaper and works AMAZINGLY well, trust me. Except the brief diapers don't work so well. Even if your a guy I would suggest just going out and buying like 16 pairs of panties (so you will be able to have two diapers without having to do a wash.) Only get cotton panties. They are thicker and soak up more fluid than briefs. I am sure that was purposely done when they were made. Hehe silly women and their leaks, its cute though.
When its time to change just slip it off like a pull up, throw the pad away in the trash and throw the briefs/panties into the washer.
If anyone trys this method please post it I would like to hear your review. I have never gotten a completly negative review from them. Most people give it a good or amazing review or neutral at the least.