My love for photos follows the "building block" theory too - literally. I love to edit photos and "play" - for me, it's pure therapy! So, recently I took a few "blah" photos and made blocks with them. = a lot of fun and a few new, more lively, images.
If you're finding yourself a bit "stuck" - think in terms of building blocks. Jog your memory and use what you know, build on top of that and soon enough you'll find your therapy, your fun and lots of other interesting moments abound!
And, of course, some Etsy "block" finds: