I bought the big kid plastic-encased horseshoe and wand magnets last week, and we had a ton of fun running around my old college campus testing out the various metals (and, which was enormously funny to her, non-metals, such as her toddler sister). We had a lot of yeses, and some surprising noes, like all the metal parts that we tested on the elevators and hand rails in the newer buildings (we hypothesize that they're aluminum).
Most of the metal doors
Walkway fencing (but not the hand rails)
Large compost, recycling and trash bins
LEED certification seal
The top part of parking meters (a passing collegiate nerd muttered "Zinc!" at us, which appears to be correct)
Salish welcoming totems
Super fun. She wants to bring the magnet with us everywhere we go now, which would be fine, but so much of our world runs on sensitive electronics these days that I kind of have to watch what's going on with it all the time. So it's a "sometimes" experiment.
On the way home we got a LOOOOOONG awaited box in the mail:
Thanks, Insect Lore! We received ten specimens, all alive and apparently healthy, and all ten of them are probably three times that size now. They're enormous. The kid is thrilled. She has decided that she wants to raise all of the larvae that Insect Lore offers (except the praying mantids, which she thinks will eat her imaginary ladybug friend named Pino, which is pronounced "pie-no"--look, science and pie!) and she wants to do the ladybugs next. I'm voting for tadpoles, but we'll probably do both.