[Wannabe]

If you dont mind, can you tell me what you meant by "I've never had any luck with side slipping the suction tube as you do, though. I guess I'm still too tight."
Have you been facing problems creating vacuum inside the cups? I am unable to create vaccum inside cups. The acrylic dome and fishbowl ideas are both good. I will have to see if these or similar ones that can serve as cups are sold somewhere close to where I stay .... i am almost filling up my current cups

I was referring to Karren's method of creating vacuum suction in the fishbowls (and other objects in the past) by laying the open ended tube between her chest and the bowl. I think I'm too lean for that to work. It should be easy enough to drill a small hole in an acrylic dome. You wouldn't want to try it with a glass bowl, though. Sealing the hole with a fitting or something might be a bit tricky, but if you're handy at such things it should be possible.