illustration by Katarina Caspersen
Having people volunteer computer time is old hat ― there is the "needle in a haystack" project of all time: SETI (the search for extraterrestrial-life), for example, but don't expect any immediate results! Contributing your own work on a computer is different though ― with SETI, you just get to watch. Of course, you can also contribute to archaeological research by volunteering at a dig, although I imagine you will end up with all the break-breaking tasks!
Three dimensional scanning is becoming very popular these days but the equipment for doing such in high resolution dos not come cheap and takes quite a bit of expertise to use properly. There are other solutions, though, such as the CIRRI software, which is easy and has amazingly small file sizes for this sort of work, but I'm not sure if the beta version is quite ready to go yet.
I'm thinking about joining a future Iron Age project, but perhaps I'll start my own on MicroPasts. You should think about what you might like to see and help to make it happen. In the meantime, you can play with this CIRRI model by Gary Robertson: