The Galaxy Tab S3 running the Gaia mapping application makes a sick offline/off-road mapping solution in my 2018+ Jeep JL Rubicon. While it's unlikely anyone will have this exact tablet just laying around, perhaps someone can use my Fusion 360 file to remix this for their tablet or can find a cheap Samsung Tab S3 on eBay for off-roading.
The mount is designed to bolt onto a RAM Curved Extension Base I had (available here). If you use it this way you'll need two to four 3/16" x 1 inch flat head screws and nuts. I recommend a wing nut for the screw that holds the slider to simplify taking it in and out.
Pairs well with my printable Jeep JL grab bar RAM ball (available here) and the pictured 2 inch RAM ball arm (available here).
The author marked this model as their own original creation.