Mostly my motorcycles, but also my scooters, had many farkles.
Gold Wing:
Added a Tulsa Tall windshield and Baker air deflectors to make it more comfortable.
Added pop-up highway pegs to make more comfortable for my wife.
Also a headlight cover to protect from rocks and such.
Added a Time Out camper and the related wiring on the GW for comfort while camping by bike.
Added dual air horns for safety.
Added a GPS mount and electrical connection for convenience while traveling.
Added remote button for garage door opener for "comfort" of not having to fish around in my pockets.
Redesigned the lighting that the PO put on to be correctly wired so the entire rear of the bike lit up bright when the brakes were used... for safety.
https://photos.app.goo.gl/n2mVTPUGJirH2CXy62005 Burgman 650:
Added a Givi top case, diminished my wallet for that one.
Added extra lighting to the top case for safety.
Added Gerbing heated gloves controller for comfort (I ride in some very cold temps sometimes).
Added remote button for garage door opener for "comfort".
Added a GPS mount and electrical connection for convenience while traveling.
Added the bungee hook studs under the passenger handles for convenience (and used a bit more out of my wallet).
https://photos.app.goo.gl/qtnPvPkNPMurUx7r5ST1100:
Added a Sargent Stealth seat for comfort (very minor improvement).
Added handlebar risers for comfort.
Added Gerbing heated gloves controller for comfort.
Added a Bestem top case and tank bag for extra storage when traveling (wallet drain).
Added LED lighting with extra turn signal LEDs around the license plate and also up high under the top case and also in the top case for safety.
Added a headlight modulator for safety (yes it actually did work really well to that end... if it bothers some people that only means they notice me).
Added a GPS mount and electrical connection for convenience while traveling.
Added remote button for garage door opener for "comfort".
Added a trailer hitch and wiring to pull a Kompact Kamp Mini Mate camper for comfort when camping by bike.
Picture below.
CTX1300:
Added extra LED lighting to the rear for safety.
Added Gerbing heated gloves controller for comfort.
Added rear luggage rack with added bungee hook studs for more storage options.
Added saddlebag guards for protecting the bike saddlebags (safety of the bike?).
Added pencil beam LED driving lights for safety.
Added a radiator guard screen for bike safety.
Added Kuryakyn Switch Blade main pegs for comfort.
Added the Honda Tall windshield for comfort.
Added a GPS mount and electrical connection for convenience while traveling.
Added a SAE cable for connecting a Battery Tender.
Added remote button for garage door opener for "comfort".
https://photos.app.goo.gl/zRTuaQRXtLCRH2gy92013 Burgman 650:
Added Gerbing heated gloves controller for comfort.
Added rear LED light bar for safety.
Added Suzuki top case (Kappa brand) and rear rack for extra storage (wallet drain).
Added a phone mount and power connection for convenience while traveling.
Added a SAE cable for connecting a Battery Tender.
Added remote button for garage door opener for "comfort".
https://photos.app.goo.gl/Hr7v7AUu8HaMcADS9Kymco AK 550:
Added Kemimoto handlebar muffs to work with factory heated grips for comfort.
Added Givi rear rack for added storage options (convenience).
Added rear LED bar for safety.
Added side stand wide foot for safety (so bike doesn't fall over on me when parking on soft ground).
Added a SAE cable for connecting a Battery Tender or an external battery.
Working on adding a trailer hitch and electrical harness to pull a Uni-Go trailer.
https://photos.app.goo.gl/2DAroH8FVr7FuxUv6Edit: Forgot to mention that on both the 2013 Burgman and AK 550 I added an emergency manual seat latch release. Posted about it in a thread on this forum.