I bought a used Mini and wanted to upgrade the memory and hard drive
The Anti Static mat kept the components safe and gave me a clean smooth are to work on. The Magnetic project mat held all the screws. I really like the printed lines on the mat, I put the tiny screws in a square and wrote down what step they came from and no problem, nothing lost or leftover.
Get the iSesamo tool to open the Mini. I used a ground down scraper before and it left some marks on the case. The iSesamo opened the case easier and left no marks.