I've already added a lot, but!
Since we bought our Tanzer 26 in 2002, we've made numerous additions for comfort and safety. Boat already had roller furling and basic safety equipment. Halyards were run to the cockpit. And PO had installed a Bukh diesel saildriveI replaced a damaged fire extinguisher and have added two more (and larger) ones. Smoke detector. New lifelines (stanchions and bases ungraded). Mustang inflateable PFD's with integral harness and tethers to go with them.New semi-balanced rudder (one of the best perfomrance enhancements I've ever made on a boat).New fully battened main (had Genoa recut for better sheeting angle and new luff tape) and installed reefing lines that run to the cockpit and lazy jacks.Replaced the head and holding tank (doubled the holding capacity to 24 gallons) and relocated the pump out fitting.New re-boarding ladder (6 foot single post design, as we dive from our boat).Bow platform, anchor roller and upgraded to a Bruce anchor.Navman fishfinder with log and Navman GPS chartplotter (small one with 5" diagonal screen and integrated antenna, a wonderful product for a smaller boat).Raymarine ST-4000 MkII autopilot. Masthead tri-light anchor light combo, with LED bulbs.LED interior lighting.Solar powered ventNew two burner Force 10 propane stove (one of the latest additions, I hope to finish up the install this weekend).Additional insulation on the ice box.AM/FM/CD player.On the wish list. Masthead wind instruments (speed, direction). Leaning towards a Navman unit.Solar panel(s) and/or a wind generator (found a very small, simple 250 Watt wind unit that would be easy to install).Folding or feathering prop.Might replace the AM/FM/CD with a unit with external jack and plays MP3'sOur longest trip to date was a round trip of 198NM over 11 days (didn't travel every day). Longest single day on the trip was just shy of 50NM with 5 nights spent at anchor.