My niece taught Sela how to make a homemade Mancala game!
Thanks to simple construction (although brilliantly designed) & all the requisite supplies having been left scattered around the game-play, here's how they did it:
Cut off the lid of the egg carton, and
cut off each end of the lid.
Tape each lid-end to the ends of the bottom of the carton.
(I noticed the game worked a little better when the lid-end was taped on at a slant, forming more of a "well" -- the beads didn't fall out as easily.)
And you know what goes well with games? History and geography! Have fun!