A.T.
My son loved the little salad size macaroni pasta - babies don't care if pasta is served cold - I just tossed it with a little olive oil to keep it from drying out. You can make a batch and divide it into little zippy bags or those 4 oz. Glad food storage containers.
You can cut up watermelon or mild cheddar cheese in tiny 1/3inch cubes. I highly reccommend the Glad containers - they're cheap enough you won't be upset if the sitter ruins one and they're lightweight and dishwasher safe. I use the little ones for salad dressing or ketchup in Hubby's lunch too.