DISPOSABLE OPENINGS / Disposable tableware

When we go to nightmarket or restaurant to takeout food,they always give us disposable dish,but
the problem comes when we haven’t finish meal but need to stop it,where should I put my tableware?
It is easy to fall if you put it on the dish,so we open a little hole on the cover let the tableware can be
stuck at that place and also won’t let the food cold quickly.