Topic for presentation

[Badmood]

Any suggestions welcome - I have to present a 3 minute topic on any subject which is non-related to the course I am doing.

My mind is blank, my normal "go to" subject is swimming, but this is related to the course.

I can't think of anything esle as I lost my phone over the weekend, and currectly can not think any further than the number of pictures I have lost

Be grateful if anyone can "lend" me an idea so I can move forwards and do something hich is not beating myself up over not having backed up the pictures...