Object based AOPs are not hard to do (at least for me). If I had some agate images, I can create such an AOP in a few minutes. Right now, I've very busy though, LigH-de. I have two jobs (full time weekend (4 10s) and a part-time job that I do during the 3 days I'm off). This week, my part-time job forgot I had a full time job so they scheduled me for 2 7.5 hours shifts. lol
I use a python script to create my AOPs now. The flow is, I import all the targeted images into a single several layer XCF (GIMP) file, resize the images to fit the criteria for AOPs (300x300 or 600x600 depending on type of AOP) and then use a sprite tape (the python script that I mentioned earlier; GIMP sees these as plugins by the way) to create a 10X10 grid. Create the mask simply by exporting the layer's alpha channel to complete the requirements.