I've seen a few racing fuel cans, like this one, that should be just the ticket. Of course, until the regulators decided they could design a better gas can for the rest of us, you could get cheap functional cans anywhere.
I did laugh at this bit of text from the description in the link you attached:
"VP Racing 5.5-Gallon capacity container can be used to store, carry, and disperse animal feed and attractants, water, and other outdoor products but should not be used as a portable fuel container."
Nudge Nudge Wink Wink.