Litter picks

[Marquetta]

an occasion when a group of people go around a public place picking up litter (= small pieces of rubbish lying on the ground) :

[Lizzy Liz]

a device like a long stick with two parts on the end that can be opened and pressed together using a handle at the top of the stick, in order to pick up small pieces of rubbish from the ground, or a stick with a point on the end that can be used to do this: