If you want to keep your cards organized during play and not let those sleeved cards slide all over the table you might want to use these magnetic card trays.
Made to fit EU/US standard and mini sizes. 40 unsleeved cards for the short and over 150 for the tall version.
They stack nicely together and on top of each other. Two short ones give out the size of a tall one and with help of the magnets you can arrange them as you like.