That red Yanmar kit, stored near the engine under the sink, has been more useful than any of the other tools except maybe the two each of crescent wrench & screw driver used to adjust the rig. Along with white rigging tape and red 3M electrical tape they're kept handy in a canvas pocket near the companionway lined with a plastic drink cup so they don't poke holes. (OK, so the cup came later, after we had already poked some holes.)
Inside the tool box (under a settee) are needle-nose and vise grip pliers, a couple more screw drivers, a hacksaw, cable-ties and an assortment of nuts, bolts, and screws in a pill bottle. Plus one multi-purpose tool from some catalog that's really just a hammer in disguise. Haven't seen the need for ratchet set or additional wrenches at sea, though I might take them if I went offshore. Spares: fuel filter, water pump impeller, half dozen assorted shackles, and a box of ring-dings and cotter pins.
There's a multi-tool on the shelf behind the chart table. It's mostly for opening beers and cutting limes since my crew all seem to carry a knife of some sort.
Behind a smoked glass slider is half a roll of sailmaker's Dacron sticky-back and a roll of duct tape. A can of McLube resides inside one and a can of Boeshield T-9 in the other. Never really use the Boeshield or for that matter the USMC KA-BAR sheath knife kept in another canvas pocket, but they remind me of my Dad and it was his boat.
