Anyone willing to help me with this?

Do wewe have any hobbies (cooking, drawing, photography, etc.)? Maybe wewe could do something related to that.

In some schools, doing a how-to on how to cast a spell may cause trouble with faculty and students, so be careful if wewe decide to do that. I like the dream catcher idea, personally.

My best how-to's were how to fold a crane and how-to care for a rabbit.

Your how-to should draw from what wewe know and are good at. Picking something that wewe have no au little experience in, may cause wewe to draw a blank or/and embarrass yourself in front of the class!

The magic tricks as long as feasible and not obnoxious should be OK! Magic tricks can be seen as old as they are done a lot and if wewe don't have a good one, people may believe it to be lame. I personally like the dreamcatcher one. So as long wewe know how to do it really well, wewe should be great.

Cooking tutorials are pretty common and any recipe works. Also, giving chakula from the recipe to your class and teacher to try goes over pretty well! Hope this helps, best of luck!