Heyho, if you clicked this, you are curious or just as crazy as me, wanting to drive around with the Scooter and nice loud Music. In my Working Theory for School i had the idea of designing a holder for my Bluetooth Speaker (Xiaomi Mi Portable Bluetooth Speaker) for the Xiaomi Mi 1S Electric Scooter which worked out great. I have uploaded both Holders here, the old easy Design and a newer more Stable one. In the old Design (V1) the Screws for the Scooter didnt fit that well and i wasnt really able to put the speaker in, so i just cut a side of the holder to put the Speaker in -- i also have added some Velcro cable ties so its more stable... it held well for more than 110 Kilmetres of driving, then i just thought, i had to redesign the whole holder. The new (V2) is opened on the Top, but holds the Speaker perfectly fine, you can even pull the scooter with the strap of the speaker (dont try it, if your print isnt that good, it might still break). You can Screw the Holder in with the 2 screws for the Handle without having a shaky handle afterwards. For extra safety i have added 3 holes for the Velcro cable ties or just normal Cable ties on the sides.

(If you want, you can try to use it on normal Bikes or other E-Scooters too, but it may not be as safe because of the missing screws then)

Have Fun with it, stay Safe!