I went shopping. Craigslist, eBay, Goodwill - I hit 'em all. What was I looking for? A pair of vintagey crystal brooches (matching) or some gaudy old sparkly clip-on earrings. I found these old Avon earrings at eBay for under $5.
Not sure how anyone wore them on their EARS - they're huge! But I think they transform these shoes from ho-hum to hot!
Maybe I haven't found just the right pair of clip-ons (that's another nice thing about this technique...you can change it up for every mood!) since I was looking for rhinestones rather than pearls, but I still think they look quite special.
Ideas for embellishing shoes: add jewelry, crystals, paint, feathers, silk flowers, fabric, leather, tassels, bows, trim, coins, paper, buttons, beads, or gems! Here are some sites I found - but there are a million out there!
http://www.mjtrim.com/Centers/Projects/23.aspx
http://shoes.about.com/od/boots/ig/Embellished-Shoes/
http://nostalgiaatthestonehouse.blogspot.com/2008/03/embellished-shoes.html
http://www.zimbio.com/Shoes+And+Fashion/articles/848/Hip+Trend+Embellished+Shoes