Bottle caps can be used to make eye-catching wall art. Glue the caps to cardboard or heavy-duty posterboard. Cover the surface completely or try an interesting design or outline. Brush on a topcoat of resin or varnish or frame in a shadowbox to protect the art from dust and exposure. Hang on the wall. Another option is painting bottle caps of all sizes in bold colors; attaching them with strong wire in a pattern such as a star, sunburst, concentric circles, triangle or spiderweb and then hanging on the wall.
Repurpose an old window by turning it into wall art. Sand the frame to remove any old paint. Leave as is with a layer of stain, paint whatever color you like or carve shapes and designs into it. Frost the glass. Remove a pane here and there to hang wood carvings, beads and trinkets in the panel or glue colored paper, photos, feathers, dried leaves or tiles to the glass. After the decoration is completed, attach and hang on a wall lengthwise or crosswise.
Dress up a boring wall with wall hanging. You can make it from a wide range of fabrics: a graduation or christening gown, old vacation T-shirts or sundresses or suits you've outgrown. Once you've decided on your textiles, read a how-to guide for making a throw or small patchwork quilt. Or cut up several pairs of old jeans to use as raw materials, find a tutorial for making a decorative rag rug and hang on the wall for a fun and funky accent piece.
For some wall décor that's truly different, you can't get much more original than a decoupaged art piece. Decoupaging is the technique of gluing several layers of paper onto something, creating an eye-catching end result. But you don't have to use just plain old paper. You can use tissue paper, wallpaper, photos, greeting cards, comic book, gold leaf, travel brochures, candy wrappers, foils flower seed packets or ribbon. Decoupage these items onto cardboard or heavy-duty posterboard, let dry and frame. Create two for a matched set.