A favorably large amount of boxes to be given away or discovered.
As in the phrase "Hit the boxpot" where someone chances upon a situation in which a large number of free boxes are bestowed upon them.
Especially significant when in the process of moving away, or looking for ways to disguise the identity of Christmas presents.
Undoubtedly, a boxpot is a freaking awesome thing to be desired and cherished.
"Holy cow, I was just at the grocery store and scored a MASSIVE boxpot!"
"YESS!!! I finally, FINALLY hit the boxpot bigtime, baby!!"
"After winning the boxpot, I quit my job and retired at age 24."