Designed right from the BBC blueprints, my TARDIS kit is meant to print flat to avoid the cracking problems I have experienced with other versions.
Read the my full write-up of building the TARDIS on Tested.com.
I tried printing a bunch of TARDI(?) from Thingiverse with problems since most of them were one piece and would tend to crack as the print got higher. I also wanted to put a lot more detail in and make it screen accurate. I got a hold of BBC blueprints and built from that.
I designed it so the the top can come off and be used as a pencil holder, etc.
If you have a 3D printer you can make your own by downloading from my Thingiverse page.
I also have printed kits with stickers, etc and lighting kits available on my Etsy store.
Directions for assembly and lighting can be found here.
I printed a TARDIS as big as possible for a friend, got it to almost 12 inches, installed a USB rechargeable battery system as well.