Be different and give your USB-Sticks your own caps.
Just download the basic forms and start sculpting and making your own members of the Stick Family.
Download the sphere basic form: http://www.threeding.com/product.php?id=1258
Download the ellipse basic form: http://www.threeding.com/product.php?id=1259
**send me pictures of your caps and i will share
When you neen help to lern how you can sculpt, see this tutorial on Meshmixer:
When you made your form and need help to produce the cap, you can contact me.