Boys and magnifying glasses! DH says the same thing and there wasn't a safe magnifying glass anywhere when DS was young.
I had a micrscope too--i would spend hours with it. Getting stuff from outside or the swamp and watching--so cool.plus i couldn't see that great to begin with so having a magnifying glass was great! also i had a small microscope and wish i still had it now. there's so much fun stuff to look at.