If they are bored give them a box or a roost -- something to jump on, sort of playground equipment for chicks. Mine are now about 4 weeks old and about ready to go outside... as soon as I build a tractor for them to play in. Howeve,r at this age what I do for everyone's entertainment is every couple of days I bring them a cake pan of dirt that is sprinkled with worms (they get grit). Every afternoon I chop up different fruits and vegetables. It's amazing how far four grapes go.
Hope you find ways to amuse your chicks -- and you!
Jenny