Lowes has a number of different small spitters: frogs, turtles, etc. One I like that is more of a dribbler than a spitter is an angel with an amphora type jar that the water runs out of. I would think that would be good for a small container garden. The link is below.

You could also make a spitter or dribbler out of just about anything that you can drill a hole through: jar, large seashell, etc.

Ebay has all kinds of pond related items also.

Good luck - oh, be sure to post pictures.. I love pictures of what others are doing,
Anne

Here is a link that might be useful: Lowes Angel Spitter

The look that I like with the half whiskey barrel is the old fashion pump constantly flowing into it.