Is there a way I can create a folder that contains images from many different catalogs?

Question

Id like to be able to put all of my select images in one folder so I can easily find images to develope at any given time.

Answer 1

Do you have 1000s of photos per day every day, so millions of images in total?
I have 1.5 years of shooting in 1 catalog, as many images as fit on my external drive, about 50,000, and all are divided into separate folders by day and subject, having folder names with date_event/subject/location format, sometimes several per day,  i.e.  2013-07-04_Fireworks, 2013-12-25_ChristmasMorning.  This allows me to find a subject or event quickly using merely a file-system search operation without having to open my catalog.    Because I automatically save XMP files for each image, I can even open a folder in Bridge and see my edits for just that folder without going into LR.
When my hard-drive fills up, I Export-as-Catalog a month or a quarter’s worth of images in their own catalog and remove them out of the current catalog, and moving those images and their corresponding catalog to a pair of archival hard-drives.  I also keep a separate catalog for important events—I mostly do just personal photohobbyist shooting, but occasionally something else.
If you currently have your daily images separated by folder, already, then create a new, empty catalog and import the daily catalogs into it, perhaps renaming the folders from within LR, as you go, so they contain the date and subject of the images, if that daily categorization is important to you.   Having them split by days at the folder level is fine, but having catalogs also split by days seems like organizing a 600 page book into 600 2-page books, one page of text and one page of index entries.
You can do just a few to start with, and work backwards in time, as you have time. 
I should say that when I first started shooting with a digital camera, I categorized things by subject: dogs, children, whatever-park, downtown, nightlife, astronomy, etc, maybe a dozen categories, and just dumped all the pictures into those folders.  Eventually I started to take too many pictures and there were too many in each folder, so I started categorizing by date and subject, which helped immensely.  This was before LR existed, but once it did, I just imported everything into a catalog, using drag-and-drop and had everything in once place but still separated by folders.