Thanks for your responses. I am really tempted to use the child’s play photo at the next opportunity (should I credit someone?) And yes, I have actually written a little 
text (see screenshot below) a couple of weeks ago to explain the basics about disassembly. However, it doesn’t seem that it has done much to alleviate people’s worries.
What I am currently thinking about is how to push the Philips #0 into a more prominent spot in Fairphoners’ attention. My guess is that 95% of Fairphoners haven’t got that screwdriver before they get their FP2 (and most don’t get one afterwards either), and my own experience is that you are more likely to get the Philips #0 just a a part of a multi-screwdriver set (I got mine in a set of five different small screwdrivers for 10 Euros in a small nearby electronics shop) than on its own.
Just a few wild ideas I have had – I know that especially the first two are way too bold and too much hassle for Fairphone to consider them, but I think they just might help to spark more creative ideas:
- Deliver new FP2s in completely disassembled state to new buyers complete with a Philips #0 included in the box
- Just include one Philips #0 in every new FP2 (assembled) package
- Offer the Philips #0 in the Fairphone spare part shop
- Fairphone should offer more encouragement to open their FP2 to Fairphoners who contact Support (and through other channels of communication)
Please keep giving feedback to my original post’s thoughts, too 