Make a sharp adhesive label to cover a logo on your laptop! There are lots of examples of awesome designs laser-etched directly into the tops of laptops. Here's one of the first instructables
on the topic. Instructables even did this for free at the last few Maker Faires and a few conferences.
Here's my problem, though: I could never decide on a design for my laptop. I'd come up with one, but a few days later I would think it was lame. That cycle happened a dozen times before I thought of a better way: Why not use the laser cutter to create a precision-cut sticker, instead? This "tattoo" would be removable, so I didn't have to be gun-shy any more.
This instructable shows what I did, including the source files for the design, a description of the special retroreflective tape I used, and a nifty trick for getting a perfectly-placed sticker.