bungees are used for many things
TJ: What is this?
Mama: It's a bungee cord. It's not for you.
TJ: It's not for me?
Mama: No, Daddy uses it to tie things to the top of the car so they won't fall off.
TJ: I use it too.
Mama: You do? What do you use it for?
TJ: I use it to catch ants.