Can someone recommand 10 easy web development and CS (in general) topics?

I have my bachelor's thesis and I need to prepare 10 topics to talk about, about web dev and computer science.. I don't really have time to prepare due to working all day (12 hours to be more exact.. yeah..) and so I need someone to recommend me 10 easy topics that you find easy for yourself as a beginner.. any help would be greatly appreciated.