I've come across a very interesting fresh trend — large textile leaves that serve as blankets, comforters and rugs. Anyone can sew something like that, even someone who is seating at the sewing machine for the first time. Those articles I've seen tell about natural materials — cotton and flax, but who is stopping you to do your own thing and create such a bright rainbow of colours!
In fact, even no pattern is needed: enlarge the image of a real leaf you like, cut out two textile parts with allowances and filler (polyester padding or cotton batting) without allowances. Sew, turn outside in, insert the filler, sew up the hole for turning and stitch the veins. Though, if this thing will only be used as a carpet, the lower part should be made of a hard material, and the upper is strengthened with interfacing.
But here, the basis is not a leaf and the bump. Too cool, in my opinion :)
I'm on my way to revise my stocks of fabrics. I hope this simple and stylish idea will also inspire you!