A rope bracelet - reminds me of making friendship bracelets back in the day. My right second toe used to go numb because I'd hook the end of the bracelet over it, and then knot embroidery floss for HOURS.
I would take this and adjust the height for a slide, include more of an angle on the ladder for my younger son and put a beam out the side for a swing .and maybe a sandbox underneath instead of a solid floor?
Had when i worked in a preschool and kids love them! I would use colored sand instead of white salt. DIY salt tray with alphabet cards. Easy to make and kids have fun smoothing out the salt after correctly making the letter