How do I give them grit???Oh sure, you can give them meal worms. If they were with a mama she would be feeding them those if they were available.
Just as a warning though, one person said on BYC that they had them try to eat each others' toes after that though (giving them to the brand new chicks) as the worms look just like their toes at that age. In case you are worried about that, you could wait until they are just a tiny bit older. I have never given them to chicks that young after reading about that, myself.
So they also need some chick grit or sand in order to digest things other than their cracked commercial grains.