Wouldn’t that be a rag? A wash rag? A napkin would get all fragile and could easily rip during the assault. To that end, you could just use the towel you have. That way you don’t have to waste space!
Either way, you aren’t sure where you’d find chloroform.
Lets see… Why a toothbrush… Well, there’s the obvious applications if you also brought toothpaste. You could use it to scrub something if it’s dirty. That second one seems likely, seeing as you’re wondering around a bunch of ruins. You hold your hoof to remind yourself to get a toothbrush.
…
Is… Is that a beetle? It is! It is a beetle! Oh wonder of wonders! There it goes! You take two steps in pursuit before falling face-first into the ground, because you were still holding your own hoof.
That really hurt! You check your nose only to find that you’ve begun bleeding! You feel pretty stupid and embarrassed as ponies crowd around and ask if you’re alright.
You’ve managed to take your first bit of damage on this little adventure. Not quite in anyway you could have imagined, though.
You’d leave right now to head up the mountain, but the ponies surrounding you are blocking your way. Plus your vision is blurred from tears.