Just a small strap to help keep the JSAUX heatsink from shifting on the ROG Ally X, using the bottom fan screw mounts to hold it in place. It can be difficult to get the screws to bite, but any thinner and the mounts began to break.
I printed at 100% infill in PETG with a 0.4mm nozzle on an X1C. The printers scaling has been corrected with the Vector3D Califlower, so it may be slightly small/large depending on your printers scaling.
The author marked this model as their own original creation.