I DO bring my GIANTmicrobes to school. But since I am the teacher, I do not get in trouble for it. I show them to my students and let them pass them around while I talk about microbiology.

Try talking to your teacher about sharing your GIANTmicrobes with your classmates. Show him/her the website for the "toys" so they know GIANTmicrobes are not just toys. If he/she gives you permission, then it should be OK.