So what you're looking for is something like Nokia Beta Labs' Mobile Web Server, but for Maemo instead of S60?

I gave this a try on my E61i and it was pretty neat as a proof of concept sort of thing. Not sure if I'd want to run this all the time (or even at all), but I believe it does what you are asking for. One of things that makes this concept work on S60 and not on the N8x0 potentially is the fact that there are a standard set of services and databases in S60 which the MWS is working with. Maemo would be a bit of a 'wild wild west' in that regard. There are a few standard apps, but would that really be enough for what you want to do?