Five very simple, very slim bookmarks or paper-clips, Because they are so simple I decied I would just publish them. They're functional enough as both paperclips or book marks, and don't use a lot of material. I churned out 50 without too many issues.
FYI: They are small and thin, so make sure whatever base you are printing on is 'sticky' enough so they don't start to curl. I have had some success just printing them without a raft, but your printer must be well claibrated and your base plate sticky.
This thing was made with Tinkercad. Edit it online https://www.tinkercad.com/things/dNiZisvLKJa