Work in pairs. Ask questions and answer them. Begin your questions with "Have you ever..?"
1) Win chess games
2) make a cake
3) send e-mail
4) spend your holidays abroad
5) buy a pet
6) Teach any school subject
7) grow vegetables
8) Speak German
9) burn your hand

Have you ever won chess game?
Have you ever made a cake?
Have you ever sent a e-mail?
Have you ever spent your holiday abroad?
Have you ever bought a pet?
Have you ever taught any school subject?
Have you ever grown vegetables?
Have you ever sroken German?
Have you ever burnt your hand?