Here's an idea...

It would be very helpful for those of us filling collections if there was some sort of search for within the collections area.

I think the easiest way to do it would be for items inside the collections to be searchable. For example, if you had a red water flower, rather than crawling your way through over ten pages (especially if you have a slow connection), you'd just type in "red water flower" and the results would be any collections that will take that item.

 This could also help people find out if any item in their inventory is a collectable.