For as much as I like to take random objects and turn them into pieces of jewelry, I like to turn jewelry into random objects even more:
When I moved into my current apartment, I found this plain red vase tucked in a cupboard, abandoned. While a cheery, bold red, on its own this vessel was decidedly dull, but an old beaded necklace in vibrant shades of turquoise & teal with sprinklings of chartreuse really makes this red pop! Blues/greens are opposite oranges/reds on the color wheel, and are known as "complements". The thoughtful application of complementary colors in one's home decor can make a bold statement--but a little goes a long way. Note the neutral background: cream walls & pale woods don't upstage the piece.
I just looped the necklace through itself --et voilà!
But what really makes this little trick work is the asymmetry of the necklace as draped.
Found Vase + Necklace I Already Owned = FREE!