Well, I just bought some new parts for my Makerbot. First, because my build platform broke, I bought the MakerBot Heated Build Platform Kit. I decided that, since I was switching back to ABS, I should be using a heated platform. I also didn't want to pay for a normal build platform now and pay for a heated build platform later when I'll really want it. Second, I bought the Magnetic Rotary Encoder PCB. I got 3 samples of the chip a while ago, so I just bought this because it may come in handy in the future. Also, I wanted to practice soldering SMT parts by hand. Finally, I bought the MK5 Drive Gear Upgrade Kit because it's just so much better than the current one.