A Replicator 2 build plate
thingiverse
My plate fractured as I was trying to desperately remove a part, so I had this one cut using a waterjet. I included the SolidWorks files in case you want to modify. UPDATE: got a build plate waterjet from glass and it was one of two best upgrades to the Rep 2 and has had a substantial positive impact on my build experience. The other best is definitely this: http://www.thingiverse.com/thing:42250 Instructions Cut from glass or acylic using waterjet or otherwise. If you use glass then you will need to use tape but in my experience the tape sticks very nicely to glass.
With this file you will be able to print A Replicator 2 build plate with your 3D printer. Click on the button and save the file on your computer to work, edit or customize your design. You can also find more 3D designs for printers on A Replicator 2 build plate.