I have an idea that's either crazy or good but I'm going to poke at it a bit before I decide.
I'm envisioning a #Fediverse #DIY service - something like Ravelry or Instructables.
Project types and outlines should be extensible so you're not filling out an electronics-focused BoM for a knitting project and instances can choose to focus on a particular type.
I'm considering including project management hooks to help a project that's in-progress but still on the fence.
No PoC yet but...