You've all shown great interest in cryptography this semester, so maybe the following might be interesting to you:
We are still looking for tutors for our cryptography introductory lecture for the upcomming summer term.
The main duties would be (online) "tutorials" where you answer questions of students and/or correcting,
I'll be one of the TAs for the lecture so if you'd be interested in this opportunity, you can e-mail me for more information.
(I also speak German.)
Until then, best regards and best of luck in your exams!
Stella Wohnig (email@example.com)