My response would have started very differently if not for the second-last word in your post!
I'm sure you can record using anything from your iphone, built-in mac mic, camcoder, etc. but whether or not its usable for that 'someone' you mention, will depend on the quality of work the person needs to use it for. If its just a rough track for your grandmum to listen to, it'll work. if it's a demo for a record label or Power98fm it won't be anywhere close to usable!
Recording an acoustic drumset can be quite tricky, and while many people get decent results using as little as maybe 1 or 2 mics, most pro or even semi-pro drum tracks, i'd imagine, are recorded using atleast 4 mics. An ideal home setup might involve a decent sound-interface with atleast 4 mic preamps (or a simple mixer, if you're willing to forego the ability to edit after recording), some decent mics (eg SM57s) preferrably including 2 condenser mics (even simple ones like the Behringer C-2s should do), a well tuned kit, a decent drummer and most importantly, a decent sounding room. The final recording will only be as good as the weakest link in your chain

-- which for many beginners ends up being their room, since they're used to discounting the slapbacks and reverb when just jamming for fun, but mics, more often than not, can be quite unforgiving.
If you don't have any of the above gear, you're probably looking at spending at least 500-600 to bucks for a simple yet decent recording set up, excluding speakers / studio monitors. A few alternatives would be:
a) to do this at a studio, where you'd be able to get a decent drum track recorded for about or under 100 bucks.. OR
b) perhaps borrow some gear (I'm sure you could convince some fellow softies to lend / rent you some basic gear, and even help you record a track at home) and see what you're able to accomplish in your room.
c) buy a
used Zoom H2 handy recorder (or any equivalent), and see if that gets you any usable results at home. It might. And is definitely a zillion times better than recording through a camcoder! If not good enough, do either (a) or (b) and sell off the recorder for around the same price you bought it for.