I would part everything and sell as parts, if I were in your situation. The airport card, e.g., is compatible to a wide range of Macs including PowerMac G5s and iMac G5s.
But I got to report more
What a coincidence. I bought a 12" 1,2GHz (2004) BTO (additional RAM, 80GB HDD from stock) model here on German Ebay.
Actually I planned to have it for parts for my main ibook 1,33GHz 12" mid-2005. The seller stated he had put out the HDD and that it was defective and said it was the 1,33GHz model. Unfortunately it is not.
Now, I thought what I will do with it, since there are very few parts I could keep.
I did the math.
Selling it?
- bought for 22,-EUR
- missing is a HDD, which will cost 10-15EUR for 40GB.
- I bought a lot of 80 compatible Dual Layer Drives for 2,44EUR each. Which I could add as an extra. Since these Dual Layer Drives sell for 1,50-10,-EUR i should calculate it as a 5,-EUR loss.
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Prices for this specific model are around 40,- (sometimes 60,-).
They have changed the fees on Ebay here and private sellers can now do "buy it now" without initial fee, so I could advertise it with Dual Layer Drive and I guess one should call it lucky, if I get 60,-EUR for it, maybe someone giving 70,-EUR. But then again I can't take 70,-EUR for a Mac, that I consider worth only 40,-EUR actually I would only buy it for 30,-EUR these days myself. (The 1,33GHz mid 2005 model sells for 65-100EUR btw.)
SOooooo,
if I part everything out and sell these, I can make pessimistically 40,-EUR, optimistically 80,-EUR. The prices do not help you much, but you can see why I think this
+ keyboard 10-35,-EUR (I do not know why people do spent 35 here)
+ display 10-17,-EUR
+ airport card 5-15,-EUR
+ Logicboard 12-30,-EUR
+ Combodrive 1,-EUR
+ case parts 1,-EUR each or alltogether for 1-5,-EUR
+ case fan 1-5,-EUR
+ DC-IN Board 5-7,-EUR
(+ the DL-DVD-drive I save and can sell seperately for 5,-EUR and wouldn't have to buy a HDD, I do not want to put my spare HDD in it

)
Giving that I have already parted it halfway, it would now be easier to sell the parts and maybe keep the display and DC-in board for me, also could use the 512MB RAM stick for my mothers ibook.
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Third way to go.
I thought of using the mainboard and building a wooden box, were just that fits in, I could route the opt. Drive around and put it above it (with 5cm space in between). I could make the hard drive better accessable maybe integrate the trackpad on the box. (I could turn the keyboard 90° and put it on top, but that would be at the cost of the small formfactor)
But then again, this already exists, I could easier buy a Mac Mini. that would have 256MB less, but the same ATI 9200, though the Mac Mini is not listed as having the mobility version on everymac.com.
Though minis go for 40,-EUR (lucky buy) till 120,-EUR (saw this several times now) but they usually set around 80,-EUR.
I could use it as a
iMovie exporting station, let it run in the background for hours to complete, but at a low power consumption (already found out that my 2,3GHz G5 DC is faster, but uses more Watts, so that the difference to the ibook 1,33GHz is the equivalent of a 60W light bulb being on for 4minutes (that was I think for 25minutes for completion of the task). (I also could always reverse this, so that I can sell the parts).
For testing 2,5" drives, I have the PowerMac G4 with adapters... so that is not an option.
Play games, well with the graphics card Nexuiz for OS X Tiger is to demanding and OS 9 games in classic mode stutter because of the CPU (that is in combination of the 9550 in my 1,33GHz ibook, I wonder if the 3D acceleration capabilities of the 9200 would come into account here). So it is as useless as the graphics restricted mac mini.
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Another idea would be to cut out the piece were the HDD can be accessed and create an ibook with swap-able HDD.
Or put it in an iMac G3 case and add a small TFT via the displayport-to-VGA port. But these small TFTs have become expensive...