I got this
cooler
with the plans on getting 5 of these
$10 trays
for it and have yet to purchase the trays but for $70 bucks it would hold a fair amount
the inside dimensions of the cooler are 8.5 x 14.5 x 12.5 tall 5 trays would be a perfect fit allowing humi blocks on the side
so far I am using old box's but it has kept very good rh