Here are two!
The first one is a reversible apron:
http://lululollylegs.blogspot.com/2007/07/lined-apron-tutorial.html The second one is quick to do, and one uses a fat quarter and a third of a yard (I think)
http://jonag.typepad.com/stop_staring_and_start_se/2008/12/your-christmas-gift-from-mean-apron-in-an-hour.htmlIn the future, I'd make the ties on the 2nd one a bit shoter, as I don't tend to tie it round the front like she has on the picture (the ties are LONG, and if you hang your aprons up, the ties might trail a bit...)
I've tried them both (the reversible apron was my first ever thing that I've "properly" sewn) and they both came out great, and I've used the patterns for gifts and the recipients have been happy too!
Hope they're of use to you