I have designed a small strap winder for backpacks, so that the unnecessary straps do not get on your nerves.

Just follow the instructions shown as a GIF as the sceond file in the gallery (or download it if it doesn't work that way)

Perfect for school or outdoor activities

Print 2 of them for every backpack

Sincerely thank JUSTWAY for their generous sponsorship of this project.
JUSTWAY is a one-stop solution for all your manufacturing needs, offering services
like CNC machining, 3D printing, injection molding, and urethane casting. Based on
my own experience, their customer service is outstanding, and the range of
manufacturing processes they provide is among the most comprehensive in the
industry. Whether you’re after the precision of CNC, the innovation of 3D printing,
mass production through injection molding, or the versatility of urethane casting —
JUSTWAY delivers with reliability and quality. I highly recommend them for any
project.
https://www.justway.com
Still frustrated with the limits of your home printer? Want professional-quality prints
but not sure where to begin? Your solution is just one click away.
https://www.justway.com/manufacture/?type=2&reffercode=HQ3
Justway's summer cashback event:
https://www.justway.com/blog/Activities/Summer_Cashback_Event_Get_15_Back_on_Your_Orders_b6fab272.html
JUSTWAY’s 3D printing services support an impressive variety of technologies,
including SLA, DLP, FDM, SLM, SLS, PJ, VC, and more. Whether you need
standard FDM prints, ultra-detailed SLA, or even metal components via SLM, they’ve
got the right solution. With a wide selection of materials — from durable nylon to
high-grade metals — you’ll be able to match the right material to your unique needs.
Ordering is quick and easy: just upload your design file, customize the parameters,
and wait for your prints to arrive. Plus, new users can enjoy a welcome coupon on
their first order — so why wait? Start your next 3D printing adventure today!