Well I don't have a 3D printer but I do have copious amounts of 35mm film containers, so with a scalpel, dividers, razor saw and a micrometer lots of shoogling and swearing, mainly because of the need for glasses and no glasses I rigged up my camera to my scope.
What was coming up on the PC screen, £30 7" tablet is due here tomorrow or Wednesday.
Some photos taken from the scope, focused on some roof tops about 100 yards away, the scope has 20x eyepiece fitted.
The slant on the photos is because I hadn't bothered to straighten up the tripod, too busy fighting with electric string, damned fiddly USBS and specs.
A jury rig no doubt and a bespoke fitting will be better, I wouldn't want this set up to be beside me when my Brown Bess was letting go for example as I could envisage the various component parts all going in different directions. At least it proves the feasibility of the parts I have, no doubt the tablet will be another kettle of fish.