My son (almost 2) loves picking up garbage, so I decided to give him garbage collection equipment as a birthday present.

For that, I'd like to get a thing which serves as a bag holder with wide opening, so that the bag stays open by itself. Like the thing the man holds with his left hand:

[![garbage equipment: bag holder (with bag attached)][1]][1]

I am looking for such a thing. It should be possible to remove/attach a bag easily (I would use disposable garbage bags). Optionally, the thing is foldable/resizable so that it can be transported in a pocket. It does not need to be a circle, anything convex is alright. The handle should be close to the opening (should not have a shaft).

**Any ideas what such a thing is called?** Maybe there is some fishing equipment like this, or equipment for professional garbage collectors, or just something diverted from intended use?

The closest thing I found are butterfly nets where the net is removed. But those usually have quite long handles, even if telescopic and retracted. Probably not easy to hold by a 2-year old after some garbage has accumulated in the bag...

PS: If you think this question does not fit into outdoors stackexchange, which one would you put it into?

PPS: Please feel free to add more tags, I did not find any other (existing) ones that fit the topic.

  [1]: https://i.sstatic.net/xR5iC.png