I used to make the inverted cone type traps but one day I didn't have any tape so I tried this. Much to my surprise it worked just as well, but was way easier to make.
Fruit flies can be a pain in the kitchen, but with a good trap it's surprising how quickly you can get rid of them.
The steps are:
1. Put bait in the bottom of the container
2. Cover top with plastic wrap
3. Secure with rubber band
4. Poke holes so flies can get in