This is a simple remix from the star sense/ finder mount. I added a large plate, strong enough to hold a mini PC mounted on it. 

I used self adhesive velcro to fasten the PC to the plate. The plate is designed to fit a HEROBOX mini PC but should work for allmost anything that you would like to put on the telescope.

remix it, drill some holes, use velcro, anything goes and you will have a large area that you can put stuff.

I printed it with simple PLA, PETG should be a stronger and more durable option.