Nimetic

Aha. Hey yeah. Well spotted.

I'd suggest an iconified magnifying glass.

Point being - simply that a person should question things, look at them closely etc. I guess this might not satisfy the "strong atheists", those who actively wave a red flag at all religious types though.

Still - it'd make a point, and it'd promote a universally positive habit. I'm assuming that most atheists have similar concerns about astrology, homeopathy, simplified ideologies and so on (nationalism, communism, fascism, other isms). That magnifying glass questions them all. Even atheism itself I'd hope.

I was thinking a telescope for a second. But I like the magnifying glass more. It reminds me of Sherlock Holmes for one. And more kids globally would have a magnifier toy than have a telescope I'd think. Ie its simpler and um, cuter.