When you go out hiking and photographing, carrying a tripod can be too much, even my lovely carbon-fiber one. Besides, you want a good hiking stick on a hike anyway, you exercise more of your body. And most hiking sticks have a small tripod screw in them to use as a camera mount.
But here's a plan to make an all-out monopod/hiking stick kit to do a lot more than you can do with just the basic stick.
First, like many sticks, you want a spike end you can stick in the ground with an rubber cap you can put on it. Some monopods have tiny tripod legs that come out of the base that can be used for a light camera on level ground, which is also useful.
However, my alternate proposal takes longer to set up but would be more stable -- guy wires. In this case some retractable strong wires that can be pulled out from near the top of the stick. On the end of the wires you would find, or could attach a means to loop the wire around something (nearby tree, railing) and ratchet to pull tight the wire. You would also have a set of fine ground spikes that could be staked in soft ground and connected to the wire loop, then ratcheted tight. Finally, you cold put weights on the wires, such as rocks, your other gear or a person's foot in a pinch.
The result could be a moderately stable platform, on which you would put your ball head, or in my case panoramic head. Of course weights or thin stakes would not resist a hard shove (though being tied around railings and trees might) but it should be able to handle a fairly heavy camera, since it is the main pole which does that job.
And of course it would all collapse into something 19" long to go in your suitcase. Though you probably couldn't have the stakes in carry-on luggage.