Kid!fic suggestions?

As has been mentioned before, I'm writing a fic where a few of the characters are turned into kids. Now I need suggestions. What should happen when they're kids? We have teenager!Gibbs, seven-year-old!Tony and baby!McGee.

Any suggestions are very welcome, crazy and not, 'cause my muse has officially run off to who-knows-where. Pretty please. I need stuff so that I can bribe her to come back.