For round and not too big you can get one of those drink coolers....switch out the bottom spicket with a hose fitting. They usually have a screw top open top so good to keep the splash down. You can even cut out an inner section of the top and put in a clear viewing window in it of plexiglass.

Are you looking to keep bunker and porgy alive in your live well for striper fishing?

The biggest problem with drums are anything smaller than 55 gallons has a pretty narrow diameter. You can cut down a 55 gallon poly drum into a shorty.