I've read recipes where they are added to oatmeal, or smoothies.
I add it to smoothies, oatmeal (we use amaranth, teff, and other GF grains), baked goods and sometimes put water to drink throughout the day as it boosts energy (the kids don't usually go for this last method though)
I use ground chia seeds in my dd's oatmeal. I just add some in while the oatmeal is cooking, and even add some in afterwards. I also add vanilla action whey protein powder, raw milk, and organic blueberries. She loves it and i know it is very good for her.
I also add chia to pancakes, smoothies, etc. It is also good mixed in to ground beef for tacos, hamburgers... obviously not vegetarian, but full of omegas!
I make a "pudding with almond milk and chia seeds, then sometimes mix in a little applesause or other fruit puree, and my 13mo loves it with breakfast (she'll either let me feed it to her with a spoon or eat it with her hands - it can be pretty thick so that's messy but not too bad). I improvise with the proportions but something like a spoon for 1/4 cup maybe. I also add it when I remember to my breakfast cereal, but you have to eat it fast if you want added crunch instead of gel!