The NPS occasionally publishes crochet patterns.
Two major collections of hobbyist and constructor's books from the UK. There are freely downloadable PDFs of all kinds of radio and electronics related stuff here.
Artisans Cooperative is crafting a “better” online handmade marketplace, run as a values-aligned, member-owned cooperative.
That kind of lock on my journal is called a turn lock. Get a few of these for my doctor's bag project.
A database of what kind of adhesives should be used to glue something to something else.
A knitting pattern for the classic Tom Baker scarf.
A step-by-step (with pattern) to sew Terezi's pyralspite stuffies from Homestuck.
How to bind pages into books. Ideal for binding photocopies into new books.
A blog dedicated to C'thul'hu mythos-related props and other crafts.
Send them a graphic of some kind and they'll do custom fabric of it for you. No minimum order, they even sell test swatches.