Here are my favorites:
1. Windshield
2. 16T front sprocket*
3. saddlebags
4. engine guard (from MC Enterprises, now discontinued?)
5. turn signal beepers (Radio shack piezos)
6. sheepskin seat cover
*Gone full circle (15 to 16 to 15 and back to 16 -- yes I like it 16)
Good luck sorting out your priorities