"Silly things" refers to actions, objects, or ideas that are not serious or important. They are usually amusing, foolish, or lacking logical reasoning. Full definition
Trying to do so seemed absurd, and I found myself doing silly things like going to the supermarket alone, only to leave with all the wrong items. (breastfeedingtoday-llli.org)
Doing silly things like that makes it fun for them and you usually end up getting the best shots too. (andeelayne.com)
There are a lot of silly things like in this game that you can get to change up how you play. (nintendofuse.com)