Here's an easy sequin garland I made last year. I found a big bucket o' sequins and spangles (that's the actual name, TM) at the craft store and this was basically an excuse to play with them. Take monofilament, knot the end, and thread on a sequin (I used the big round spangles). Make another knot in the thread at whatever spacing you want the sequins to be. Mine started out at about an inch apart and then quickly drifted further as my fingers started hurting from knotting the monofilament. Last year I taped them up as streamers in my windows, but I think I'll try them on the tree this time around. They are actually much more sparkly and colorful than my poor photography skills show.