well short of braised chipmunk,,, perhaps a sturdy wire mesh might work, like a dome over your eggplants, mmmm you know what its like when you get a taste for them,eggplants are a gate-way veggy

Cats

Your garden will have to be completely caged. We have watched the brazen chipmunk in our yard climb up tomato cages to get tomatoes. Last week he was on top of a large borage plant.

A cat or hav-a-heart trap is the best idea.

I don't think it would be too easy to control them.. Especially if you are near a wooded area.. There could be thousands of them.. rubbing their paws menacingly.. patiently waiting for your veggies to ripen. I'm sure no one agrees with me but I just let em' eat. Rabbits, deer, armadillos, squirrels.. They all have a feast at my place... And yes.. Often I get so SO pissed off... Especially when the deer eat my Dragonfruit (they freakin' LOVE drangonfruit-- the cactus and the actual fruit).. They also devour every bit of new growth on my prickly pear. Maybe grow extra to offset their appetites? That's what I have been doing. I get so mad at them.. Then I think.. This is not my land.. It's their's.. They were here long before me... Let them eat. Now don't get me wrong.. I will attempt to cage plants up amongst other "animal-friendly" means.. But if they make their way around (which the inevitably do) all I can do is sigh.

You could also try portioning off a garden just for them? Less care.. And you won't be real attached to the fruit. Or provide them with foods they prefer to eggplant... and make sure it's always available. Unfortunately, you just run the risk of drawing more of them to you. It's a tough one...

I read cinnamon oil does the trick to rid chipmunks.