Mine keeps going thru "evolutions" (or so it appears).
Here's a slide show of what's inside mine;
The towels go 1 above and 1 below after the eels have arrived and calmed down.
Part with ice can also hold cut bait. Anouther simular size that sits inside with a ring for add'l lures / tackle / walkman / beers / or what-nots.
Ice bucked has drainage holes to keel live eels flushed with melting ice water (cold and moist / damp is good).
Inner floor sets 2" above base, and has drain strategicly located on side and holds iced water as req'd. Holes for drain keep eels from drowning.
When in the basement, I run an aquarium (very cheap one) To keep fresh air pumped in. Also have 2 other full blocks of ice in simular ice buckets (without ring) in the freezer for replacments along with 2 quarter depth pieces (as shown) for beach walking. It can get heavy.
Used 3 - 5 gal. pails w/ lids and a couple cheap platic paint buckets fir ice (all rust proof).
I can keep 12 dormant eels in this for over a week with very few fatalities. And it's ready to go at the drop of a hat. Plus it doubles as a seat.
Looking to improve and wonder what you guys may use when pulling an all-nighter? (pictures worth a thousand words)
PS; I'm board awaiting night fall!