I wonder what Illich would think of these. I think these are more convivial than not, now that they're in a more affordable price range. Hackerspaces especially have the feel of convivialization, because when they're Open, they have the tendency to reduce the need for specialization and such by not only making the tool available to all financial levels, but also eliminating the need for controlled specialized knowledge.
But this raises some questions: many of the tools we use in hackerspaces DO have some amount of constraints here: a novice who breaks the only 3D printer in the space makes it unusable for everyone and thus is a thing we wish to avoid. Some tools do require skill, but we want to avoid making that skill unavailable. But that doesn't mean that everyone has it, just has access to it if they want. Is that convivial, or is that still some kind of skill gatekeeping and dependence? I think one real solution to this is to push toward using highly available and highly replicable tools. For instance, if it's trivial to 3D print a replacement 3D printer, then the destruction of a single 3D printer, even if it's communal, will be less impactful, because you'll also have been able to produce replacement parts, or replacement printers, as backups long before the damage happens. Also even if you don't, many people will have printed their own and if the community is solid enough, they'll happily chip in to print a new one for the hackerspace. Perhaps the solution to conviviality is parallel to the solution to the Tragedy of the Commons: MORE COMMONS! And if you don't have more commons out of no where, this just means we need to be working on solving the problem of getting to more commons. Make it irrelevant what happens: small all the tools in the hackerspace! It's ok! Because we can always magic up more of them.
"The principle source of injustice in our epoch is political approval for the existence of tool that by their very nature restrict to a very few the liberty to use them in an autonomous way."
Also, perhaps the most convivial tool of all: A community with a strong commitment to solidarity, communal support, optimism, and enthusiasm for building the future.