“Very frequently, in the shul I lain in, kids will pull up a chair to the bimah and watch me lain from the opposite side. There is one kid (a Down’s Syndrome sufferer) who makes sure to always watch me lain when he can. “
What about putting a yirah of a makom kedusha and something as kodesh as laining in kids? If you let them think its a game theyll loose all respect for the laining and shul.