We've got chicks, I think four weeks old at this point. And we had been giving them grubs and other wriggly things we found in our flower beds when we were digging them up and planting there. But now that's done, the girls seem disappointed when i go near the pen and don't have a treat.
So my latest is to grab one of the abundant dandelion heads nearby, and if it's not already open and fuzzy in seed dispersal mode, I simply open it up and put the seeds on my hand. They go CRAZY and fight to get closer to eat them.
So it's killing two birds with one stone -- sort of mowing off the seed heads to limit the amount for next year, and still teaching the girls to associate me with tasty treats. (which means they come towards me instead of running screaming in the opposite direction) ;-)
good luck!