File saving from non-document object

Dear All,

I have got a problem and I hope somebody has any idea to solve it.

I have a non-document object type to store a special information, where the users can upload files to these kind of objects.
They usually upload 1, max 2 files per object.

I would like to download all of files, but without the folders, which created per objects.

So only the files in one big folder, because the one folder - one file is enoying a little bit.
Which could be the best practice for it?

Should I transform this structure to document type or are there any other solution?

Thanks in advance,