Pink sling bag used Rainbow Happy Fun Pouch stitch pattern from Mooglyblog. The strap used single crochet and slip stitches because I wanted small strap but still pretty strong.
Blue sling bag used Suzette Stitch pattern from Make and Do Crew.
Magenta sling bag used The Snowdrift Slouch Hat stitches pattern from Little Monkeys Crochet. I even used the stitches for the strap. It’s beautiful.
Blue sling bag with flap used no pattern, kinda just wing it.
Rainbow sling bag used any stitches that I know so no pattern.
As you can see, I only used the stitches and didn’t follow the patterns to the T (or you’d get a pouch, a hat and a bag, not sling bags).