This is a cushion that I made for my sister's birthday, indeed complete with an embroidered TARDIS on the front of it. I co-ordinated the colours to match her room ( as well as, you know, TARDIS Blue) and it worked really well. It's just a simple envelope pillow in design, but then she doesn't really care about the back of it!
I found the pattern for the TARDIS over at the lovely people from Fandom in Stitches, and I'm so glad that they've started bringing in more embroidery projects, because paper-piecing terrifies me!!! To transfer the design, I merely pinned the paper to the top of the fabric and stitched around the lines.
And my sister loves it, so that's even better!