Double bucket with a bottom "partial" bucket insert posted by macojoe years ago (I believe originally). Insert one bucket into another and fasten with wing nuts at 90 degrees at the top of the lower bucket. Punch 1/8 holes in the bottom of upper bucket and cut a 1/4" hole on side (at bottom) of lower bucket and fit with rubber stopper. Cut the bottom off a 3rd bucket low enough to sit below the top of the upper bucket when placed on top of the wing nuts. Fill the top ) partial bucket bottom with ice (call it a tray). Lift the tray and put your eels in what is now the middle bucket. Pull rubber stopper to drain melted ice/slime. Put in stopper to transport with no mess. Use a standard bucket cover to cap the unit with a few holes for air. If you keep ice in the top tray the eels will last for days. I love mine even though I never get to use it. Thanks Joe!

Oh, and one more thing. Paper towel is the best way to grab the eel that I've ever tried. Nothing against the other suggestions, but it's how I was taught and if it ain't broke.....

Side note taught to me by some pretty awesome surf fishermen. If rock hopping, throw a couple eels in ziplock bags. Hook em right through the bag and tear the bag off the hooked eel. Genius.

Tight lines!