ACEO (Art Cards Editions and Originals) have become highly collectible works of art. To be called an "ACEO" they have to be 3.5" x 2.5" in size.
There is a wide range of beautiful frames for single or multiple paintings available to buy online from all the well known outlets. You can also buy special albums in which to display these paintings
Most of these are now sold but I would be happy to paint one for you. Please message me.