You can make Pajama Pants - they are the first thing to learn when sewing. I taught a sewing class to 5 yr olds and the project was PJ Pants. So grab a pattern and get to sewing! For these I didn't grab a pattern which was a bad idea because they didn't fit well. I learned for next time. I used a flannel sheet set I bought at a garage sale, even using the elastic from the fitted sheet for the waistband - talk about thrify - 6 pairs of pjs for a total of $2. Since it was a sheet it had a finished edge, so I used it for the bottom of the pants so I didn't even have to hem anything - remember that trick!