There are basically two types of futuristic images available for today's people: in the "bright" ones, technology and general inventiveness would save the society from both collapse and an embarrassing change of attitude. In the "dark" ones, humankind would face profoundly horrible and hopeless times, maybe even extinction.
People like the "bright" images so much that they do not even want to think about the possibility of a collapse. Since collapse is nevertheless rather probable, we ought to prepare ourselves for it in ways other than waiting for a miracle salvation or getting paralyzed or nihilistic. We need a third type of images, ones in which collapse would be received with wisdom and constructivity, as a possibility to build something better after learning from our mistakes.
Nature recovers from disasters because of its diversity. For this reason, we should give room and support for every preparation or rebuilding plan that is at least somewhat based on reality. It is also impotant to ensure that the preparation will not remain exclusive to small circles, and that the entire population will get a chance to join it already before the circumstances force them to.
The best time for building storm-tolerant life frameworks is now. The longer we wait, the less we will have margin for blunder. Especially the visions requiring lot of experimentation and research must be worked now that we still have resources for it.
I have been pondering a lot about the nature of post-collapse technology. Modern technology has often even inconceivably complex dependency networks, maintenance of which will become impossible at some point. At this point, the technology will have to replaced with something with considerably simpler dependencies; however, it will not necessarily have to be old, traditional, primitive or self-evident. The permaculture and appropriate technology movements have the proper kind of attitude for this.
I do not believe computing will be nearly as ubiqutous after the collapse as it is today, although there will be reusable material among electronic junk for at least a few decades. However, there are some computational applications I believe could be particularly useful during the transition period, and which I would be happy to work on:
In the horizon I imagine a kind of space elf vision where humans would no longer be cancer but a species supporting the livability of this planet and possibly other spheres. There is still a long way before this can realize, however, and the way will be painful at times.