Gription Non-Slip Tape and Grip Pad Bundle by CatTongue – Durable, Non-Abrasive Grip Tape and Non Slip Mat, Customizable & Waterproof for Thousands of Uses (Black Tape)

Honestly a brilliant idea, and exactly what I was looking for. I stuck it on a wood lap desk I have to keep my laptop from sliding around in tablet mode (it rests on its keyboard and has no feet that way). I used the mat to cover most of the area and a little of the tape to finish it off. It's sticky enough on its own that the non-adhesive mat has stayed on fine with just a few lengths of double-sided tape underneath. No real adhesive needed. The cat tongue tape is honestly genius because it's peel-and-stick. You can cut it and adjust it how you want, and it won't stick until you're ready. Grip on both is A+, almost like a rubber mat.