@mudcat , they are fun but it took longer than 1 hour to sew as often touted online. Look up Jelly Roll Race as suggested earlier or 1600 Quilt. You'll get some different results for images and links.
I've seen 3 methods of doing the eternally long strip. On the diagonal like binding, selvage trimmed off then just butted end to end or my preferred method, butted with small pieces of a complimentary color or black. The short pieces I randomly cut 2" to 5" pieces, about 18 of them to sew at the end of some of the 40 strips. It helped to randomize the join lines. I used Hallowe'en fabrics and short pieces of black. Wear sunglasses when viewing.
If you're doing wider strips this will be even more important but you have to cut one piece in half and discard to create the randomness. I also cut a number of my pieces in two, not always in half. With wider I'd consider some that way and some in thirds. The diagonal ends might be nice with the wider strips as well.
Otherwise you might as well do a flip and sew quilt as you go with all the strips. Those work well for a lap quilt and can go vertical or horizontal for the strips.