Motowerks peg lowering blocks for leg comfort for 500+ mile days & old knees. $42
Grip heaters for warm happy hands. Extends Seattle riding season to year around: $25
Pro Grip Gel grips for happier hands: $15
Throttle rocker/cramp buster for happier right hand. Free! Got it 30+ years ago and it just keeps moving bike to bike.
Blinker genies for visibility (runs turn signals as running lights): $25
5W LEDs for City Lights for visibility: $11/pair
6 neoprene washers under the front tank bracket for happier balls: $3 Less seat forward slope, less tank vibration transfers to seat.
Everything else cost more than $50.
2014 Ninja w/bags, Motowerks lowered pegs, Seth Lamm Seat, Puig screen, Givi XS307 tank bag, WOLO BadBoy horn, LEDPerf H7C HID lights, Aerostitch Roadcrafter