Things we will need but might forget

today I found a list of things that westmarine.com thinks are necessary/optional for outfitting a boat for cruising;
Radar Reflector (so ships wont run us over )Mast Three color Light ($300 - LED)
Medical Kit ($500)
Spare Antennas
Good Watch ($500)
Windvane Steering System ($4500)
Fans ($200) - Probably 7 or 8
LED Interior lights ($150)
Small Sewing Machine
Electric Winch for Anchors and Chains
Watercolors and Paper
Good Kitchen Knives
Real Sine-wave Inverter and a modified inverter