I just had a thought… Some kids will eat almost anything if they can eat it with toothpicks. Cut up chunks of vegetables, cooked meat, fruit, etc. and instead of silverware give them a cup of toothpicks (the decorated ones are fun, and always cheap if you buy them after a holiday). Same idea but different is to make kebabs, and then they can assemble their own with things they want from the choices you give them. Taco bars are an idea as well, with them choosing what they want from the options you provide.