What's the best way to keep screws while doing a repair?

[Rodion15]

There're these little boxes with compartments but are usually too deep to work. Any other better way to keep the screws you've unscrewed for the repair?

 

[oskerw]

Magnetic parts tray / screw tray

 

[smorizio]

cheap way is take a 12 egg carton and cut it in 1/2 for six small holders.

 

[Rodion15]

Thanks for your answers. Very useful.