I forgot to pack a belt while travelling but I had a pair of plain black leggings.  I got creative and took the leggings, straightened it out and wrapped it around my waist making sure that the bottoms of the leggings were the ones I was tying together in front of my waist.  Since the ends are a bit bulky after being tied in a knot, I made it look like  a flower by simply spreading out the fabric and it looked like a rose.  It looked very trendy and nobody had any idea that it wasn't a belt.