While I remember Sporeworld (I think) having pvc fittings around a hole cut in the screen, I haven't come up with those fittings when I have looked (I am quite unhappy with the hardware stores out here though).
Now, if you can cut a hole in your container (deli cup, for example) that is probably best.
However, if you can't. Or if an unexpected situation puts you in an odd place, then I have found recently that I can:
Make a circle of hot glue on one side of the screen (actually, it is mesh I have been working with)(you might want to draw the circle first)
Then mirror it on the other side when cooled.
Then repeating on both sides.
Then cut away the mesh inside the hot glue circle (this is hard, it is a small hole, but it does not need to be perfect).
Jam something in the hole to twist. I like a sharpie for this. This step grinds away the extra screen somewhat, and seems to put an edge on the glue.
Should be it, make a foam bung stopper and go about your business.
I have been making the first hot glue circle somewhat larger than the hole should be, as it will fill in a little with the successive layers of hot glue.
Again, this isn't a perfect solution, or rather, it solves problems that have been solved better in other ways. But as a panacea it is pretty nice.
Now, if you can cut a hole in your container (deli cup, for example) that is probably best.
However, if you can't. Or if an unexpected situation puts you in an odd place, then I have found recently that I can:
Make a circle of hot glue on one side of the screen (actually, it is mesh I have been working with)(you might want to draw the circle first)
Then mirror it on the other side when cooled.
Then repeating on both sides.
Then cut away the mesh inside the hot glue circle (this is hard, it is a small hole, but it does not need to be perfect).
Jam something in the hole to twist. I like a sharpie for this. This step grinds away the extra screen somewhat, and seems to put an edge on the glue.
Should be it, make a foam bung stopper and go about your business.
I have been making the first hot glue circle somewhat larger than the hole should be, as it will fill in a little with the successive layers of hot glue.
Again, this isn't a perfect solution, or rather, it solves problems that have been solved better in other ways. But as a panacea it is pretty nice.