"Valuable" can mean something of monetary or sentimental value.
I'm going to construe canoe trip very loosely for myself in this thread.
Maggie and I drove to Lake George, NY, in the Adirondacks last week to leaf peep and paddle bark canoes with Rogers' Rangers. I believe this is a picture of us with our Mohican paddlemates, but I'm not positive because of WHAT HAPPENED to the phone camera that took the picture.

The next day, we drove up to the top of Prospect Mountain, which has an almost 360° view of the Lake George area. We got in free because we are old. Yay, saving money on Prospect Mountain!
Reconstructing what happened, we were taking selfies with our camera phones at the walled pedestrian overlook at the top of the mountain. I must have put my Google Pixel 9 Pro on the wall while we became distracted by chatting with and taking pictures with another couple.

Then, we walked to another area of the wall, I sat at a picnic table for a while, and we finally went back to our car. I immediately realized I didn't have my phone.
We looked all over the car. No phone.
We went back to every place we had been along the wall. No phone.
Gerry, a 77-year-old park ranger, took notice of our distress and helped look all around the wall and picnic table area. No phone.
I finally realized that I could use an app on Maggie's phone that's called something like Find Your Phone or Find Hub. It showed my phone a fair distance OVER the wall about 500 yards from any place that we had been along the wall. And in that area OVER the wall is a steep cliff covered with boulders, bushes and leaves. I and the younger Gerry went over the wall to look. No phone.
Maggie recruited three passing teens (who could actually walk without falling over) to cliff scramble. No phone.
After two hours, we gave up and missed a lake tour on the steamboat Mohican. No phone.
The next day we drove to the Spectrum Store in Glens Falls, where I bought a new Google Pixel 11 Pro XL that was on sale.
That trip cost me an extra $800 and every sentimental thing on my lost phone.
It remains a mystery how my phone could have disappeared off the wall within 20 minutes of my leaving it there, and how in blazes it ended up far OVER the wall 500 yards from where we had been. Any theories?
Anyway, back to the regular program, tell us about things you have lost on more genuine canoe trips.
[P.S. Lake George is called Horican in James Fenimore Cooper's The Last of the Mohicans.]
I'm going to construe canoe trip very loosely for myself in this thread.
Maggie and I drove to Lake George, NY, in the Adirondacks last week to leaf peep and paddle bark canoes with Rogers' Rangers. I believe this is a picture of us with our Mohican paddlemates, but I'm not positive because of WHAT HAPPENED to the phone camera that took the picture.

The next day, we drove up to the top of Prospect Mountain, which has an almost 360° view of the Lake George area. We got in free because we are old. Yay, saving money on Prospect Mountain!
Reconstructing what happened, we were taking selfies with our camera phones at the walled pedestrian overlook at the top of the mountain. I must have put my Google Pixel 9 Pro on the wall while we became distracted by chatting with and taking pictures with another couple.

Then, we walked to another area of the wall, I sat at a picnic table for a while, and we finally went back to our car. I immediately realized I didn't have my phone.
We looked all over the car. No phone.
We went back to every place we had been along the wall. No phone.
Gerry, a 77-year-old park ranger, took notice of our distress and helped look all around the wall and picnic table area. No phone.
I finally realized that I could use an app on Maggie's phone that's called something like Find Your Phone or Find Hub. It showed my phone a fair distance OVER the wall about 500 yards from any place that we had been along the wall. And in that area OVER the wall is a steep cliff covered with boulders, bushes and leaves. I and the younger Gerry went over the wall to look. No phone.
Maggie recruited three passing teens (who could actually walk without falling over) to cliff scramble. No phone.
After two hours, we gave up and missed a lake tour on the steamboat Mohican. No phone.
The next day we drove to the Spectrum Store in Glens Falls, where I bought a new Google Pixel 11 Pro XL that was on sale.
That trip cost me an extra $800 and every sentimental thing on my lost phone.
It remains a mystery how my phone could have disappeared off the wall within 20 minutes of my leaving it there, and how in blazes it ended up far OVER the wall 500 yards from where we had been. Any theories?
Anyway, back to the regular program, tell us about things you have lost on more genuine canoe trips.
[P.S. Lake George is called Horican in James Fenimore Cooper's The Last of the Mohicans.]