Do you mean you want to use it for something other than tomatoes, Charlynn? The sky's the limit in that regard. At Mass MoCA in North Adams, MA, they have full-grown trees planted upside down. It seems like a form of torture to me, because the trees are clearly trying to right themselves, but it can be done.
Make sure you have it on a strong support as it will get quite heavy. Use a really good draining soil mix for the bag. Fertilize often with a lower dose. Wind and direct sun on the grow bag itself are not your friends.
Then I saw a bird made a nest in the topsy turvey thing & I quit watering it.
Needless to say it didn't grow well at all with no water.
Topsy was hung under a pergola which gave the tomato both some sun and some shade. I think the tomato likes sun and maybe a little shade.
I plan to do it again this year - very soon.