We have a cupboard with Sodastream bottles and concentrate bottles thrown in. Now all organised!
Features - holds up to three bottles, by the neck with or without lids.
Screw holes to secure inside the cupboard.
Slight recesses for each bottle to drop into (probably could be a fraction deeper tbh, but I'm happy enough for now).
Check screw holes align with your cupboard sides / top!
The author marked this model as their own original creation.