DIY Upcycled Plastic Bottle Cap Mosaic. I've seen similar colorful paper coiled art on Pinterest but it seems very time consuming to coil papers so I thought bottle caps would make it an easier project. With the help a a few friends, I saved up enough caps in just a few months! Materials : canvas, caps, large bottle of matte Collage Pouge (found in the decoupage section of craft stores), plastic glue ( I just used my E-6000 glue) and acrylic paints. Tools: X-Acto knife, course sandpaper and an old paint or glue bottle with a pointy tip or you could just use a plastic baggy. First, I sanded the top of the lids and roughed them up with an X-Acto knife to help the caps stick to the canvas. Next, I used a generous portion of the Collage Pouge so it oozed out the sides. You may want to put stack of newspapers under the canvas to prop it up so the canvas wont sag under the weight of the caps. I had a large cap from a jug of protein powder that I just glued underneath for support. I started gluing at the center and worked out. I then filled an old paint bottle that has a pointy tip with the Collage Pouge and squirted the Pouge in all of the spaces to make sure these caps will stay put! (Not sure if this step is totally necessary) You can just fill a plastic baggy with the Pouge and cut a little hole if you don't have a bottle with a pointy tip! If you want to add caps inside of larger caps, use a plastic glue or E-6000. Finally, I filled some of the caps with acrylic paint, the little bottles of paint from craft stores are the right consistency for this. Then I let dry flat for a few days; and I now have a colorful, textured piece of upcycled wall art! Comments welcome! Be sure to check out my eco friendly magnets made from bottle caps!