PM user named Whimsea and at the end of yer question there, ask Whimsea if she has any hobbies.
Guarantee she'll PM ya back with seven minutes worth on her hobbie. Use that.

I like to go to clubs and dance. I like crocheting and cross stitching. I need to write a 7 minute informative speech on a hobby of mine. I just don't see 7 minutes coming from any of these. I played softball, but I can't talk about experiences. I have to be informative, like teaching the class about something. What could I do? I think I'm going to have to make a hobby up.

crap, I though I was going to learn about crotcheting