I designed this Bottleholder for ISEKI lawn-mower-bulldogs to hold my beer while mowing ;-)
I've mounted it on the left side in front of the seat-belt-buckle with the snap-fit. You can also press it on the sheet using bolts.
I highly recommend printig with a raft of brim because the rear wall isn't connected to the rest untill 70mm layer height. My first print failed because the wall fell over.
I printed it in PETG because of higher strength and temperature resistance than PLA
PS: You can add a sign on the front side in PrusaSlicer
The author hasn't provided the model origin yet.