The practical idea
A family project workspace does not need a decentralized network or a new financial model. Start with a folder, a clear purpose and a small set of access rules.
Decide what belongs there
Choose a project and a few useful files: the plan, source links, work in progress and the result. Keep personal or sensitive records elsewhere.
Make responsibilities clear
Agree on names, versions and who can change or share the files. Use a tool the household understands before adding automation. Review account requirements and permissions before inviting a child.
Check whether the setup helped
After the project, ask whether people could find the right information and understand the latest version. Simplify anything that added work. A usable folder is a success without a claim about future wealth.