If Karl's gonna post his equipment list than so am I
This is the stuff I bring with me whenever I go to a Disney theme park:
1. 2 unmodified induction pickups
2. 1 induction pickup without suction cup
3. 1 induction pickup without casing
4. Telescoping pen magnet
5. Popsicle sticks
6. Electricians tape
7. Glue dots
8. Rubber bands
9. Dual Mono to Single Stereo Y Adapter
And of course my recorder. All of this stuff was bourne out of advice I was given by others and also crazy ideas I had about how to do certain recordings. And to tell you the truth- most of my ideas were really bad. I put myself in a lot of uncomfortable situations (physically and socially) in the interest of getting recordings. And I used the wrong recording equipment, which severly held me back.
Let me add an additional endorsement for the Edirol R-09HR- it's expensive, but it's opened a whole new world for me when it comes to recording and you wont find anything better.
Also, I believe eyore mentioned what is probably the only absolutely solid rule when it comes to induction recording: bad speaker = bad recording. Always. Whatever the speaker sounds like, that's what your recording will sound like. If the speaker sounds bad your recording will sound bad, no matter what.
As for the iPod thing- don't do it. I started out using an iPod voice recorder attachment with a line in (I think it was made by Belkin). The quality wasn't bad but there are several other issues. One- the iPod has a tendancy to lag and the recorder never seems to start when you want it to, which can be a problem. Two, if you use your iPod as an iPod as well you'll run into battery issues most likely. Three, you can't set or even see levels or any other settings (HUGE problem). And fourth and worst of all, the attachments usually use the dock connector, which is extremely unreliable. Often the iPod wouldn't recognize it was there or it would come lose during the recording (which isn't hard when you're on, say, Space Mountain). In both cases, the result is no recording.
I cannot stress enough: don't buy a voice recorder. Buy an audio recorder. Voice recorders are made for recording just that- voice. They are designed to adjust for volume and such to produce an audible recording of the human voice. They are not designed to record music, and are not designed with audio quality in mind. If you want to be recording music you need a recorder that was designed for that purpose. The ability to manually set levels is a MUST. Also, you want to be able to record to an uncompressed format.
And by the way, I went out a few weeks ago and bought an 8gb SD card for my Edirol. I can now record something like 60 hours at 320kbps MP3. I even did some recordings at 98khz 24bit WAV- and let's just put it this way: I tried playing them on my iPod and it crashed. Good quality though!