A few weeks ago David of Tropical Texana posted results of testing free online collage formats. One of his collages reminded me of my favorite effect in Fotoflexer. It's the "pop-art" effect which will turn your photos into a Andy Warhol style masterpiece in seconds. I played with several photos and my favorite is this agave.
Printed out on poster paper or canvas it would be a fun piece for a wall.
Here's the original photo which was taken with the camera on monochrome setting. Simple lines with contrast work best.
The pop art effect is set with fixed colors so you can't change them. If you have plenty of time on your hands you could use any photo editor to select areas of your photo and choose your own colors. I'll stick with the easy Fotoflexer version and it's free, just sign up.
Monday fun for January.