I made a nylon pedal strap today. Took me about 2 hours from beginning to end with a lot of re-dos and newb issues. The piece is very solid and functional and has features that the leading BLS strap doesn't. My measurements are off (need it to be longer) and the stitches look really bad, but it works.
I got everything I needed from Home Depot for less than $5. I had some Velcro ($3) from the fabric store. Nuts.
It's like when I strung a tennis racquet for the first time, 2 hrs. After a few times, I was down to about 45 minutes.
I'm really pleased with purchasing a sewing machine!