Standing desk and possible health issue

I actually bought the VIVO a few weeks ago. It’s fine, I was a bit worried because it was half the price of some competitors.

The only issue is the keyboard tray is not adjustible so it kinda tilts a bit towards me. I was eating lunch on it and it slipped on my lap. The mouse part is also some grippy plastic which I don’t love. I may try putting wax or something on it or try extra teflon on the mouse.