ALWAYS have the following items for every float. Expect the worst, and prepare. You will not be sorry.
~Spare oars easily accessible, and ready to go.
~Extra oar locks. 2
~Extra oar stops.
~Have a knife at both anchors, so you can cut the anchor ropes if need be. I had a buddys boat that his anchor gave way in some rapids due to a cleat defect and jam in some rocks, making his boats stern dip into the water and damn near sink. He was thoughtful enough to slice the rope in time.
~I would recommend having 2 anchors, front and back. If you lose one, you can still have a back up anchor.
~Extra set of plugs. I have 6 in various boxes.
~Have a 200' lenght of rope for slides, or various purposes.
~I like to have a hand bilge pump. A day of rain can fill a drifter up pretty good.
~Get some break down navigation lights, for evening boating. I use them even when I'm only rowing. If you never plan on putting a motor on it, have some kind of light for navigation.
~Have a spare set of wheel bearings for your trailer. Also have extra trailer light bulbs.
~Have an extra tie down strap for the trailer.
I'm sure I'm missing some other items, but others will chime in as well. Have fun, and enjoy the best form of boating there is, IMO. :flowered: