This is a cup/mug/glass holder/stand that mounts onto a caravan window ledge. This is especially useful if you choose to sit with your feet up along the caravan seats (facing out the front window for the nosy sort, or facing into the caravan) and your caravan doesn't have a close enough surface to put your cup of tea or glass of something.
These window-cup-holders simply hook over the narrow window-sill when the window is opened (the window can close completely with the cup holder in place, but I wouldn't recommend travelling with it in place as the movement while travelling may scratch the acrylic in the windows)
There's also 2 handy pockets for pens/pencils/crochet hooks, etc
There's 2 sizes as when I printed the large one I realised that it is a bit huge!! so I edited down the top on the small one.
These fit well on the side windows on our 2013 Elddis 504.
EDIT : 23/06/2019 - Added a Mk2 version of the smaller stand, with a couple of edits to make it a little lighter (thus using a bit less filament) and also editing a couple of overhangs to make them easier to print without supports
Print on edge to reduce the need for support. Printing with a Raft is recommended as there isn't a lot of contact with the build-plate, I used an added 15mm extra on the raft.
Supports may not be needed, but will give a bit better surface on some of the overhangs (especially at the bottom, so supports touching baseplate should be sufficient)
The large one with 17% infill took about 56m of 1.75mm pla, the smaller one uses a bit less than 40m.