What you buy for a goose is a re-usable diaper harness with a pouch beneath the vent area. You put a piece of regular baby diaper in the pouch and change it regularly.
I don't think you can get a goose to wear a baby diaper - at least not for very long. But I would absolutely love to see you try!
Seriously, I think your goose will rip the diaper into little pieces, and I'm afraid she might accidentally swallow some of the material. That could be very harmful.
The diaper harness is made from sturdy gooseproof material. I've bought mine from
www.thegoosesmother.com, but I found similar harnesses at
www.indoorducks.com. Actually, the latter seems like the better choice, because the harnesses there are leak-proof. As soon as my goose is grown up, I will order a cuple of harnesses from there. I might even try the shoes, too, my poor little baby skids around
a lot on my hardwood and tile floors.