
So I found this multitool buried in my drawer. It's from my days in Boy Scouts, as I can glean from the fact that I found it with a badge and some kind of certificate, and the small fleur-de-lis printed on the side.
It was part of a two-piece knife set, which also included a smaller one in a neat little box. It has a knife, saw, scissors, can opener, screwdriver, corkscrew, nail file, and keyring.
But I also noticed some tools in this set that I don't quite recognize. I'd like some help identifying them.
The first:

This one cannot be a saw blade, because the saw blade that
is included is actually sharp. This is just a blunt... thing. It's like half of a crab shell cracker or something.
The second:

It looks like a can opener, but there already is one on the multitool, shown in the first picture next to the scissors.
The third:

This is merely a stick with a hole at the top. Not one sharp edge, or anything. Maybe some kind of lockpick? I don't know.
The fourth and final:

This one is by far the most puzzling.
It's a stick.
No holes, no edge, just a vague knife-like shape. But what kind of practical knife would be perpendicular to its handle?
I'd really appreciate some help identifying these so I can maybe use it up to its full potential.