Sustainable craft supplies

• Tencel thread from James Tailoring - still biodegradable but less damaging than cotton?
• Fast Fashion Therapy sells mending kits, including things like spare buttons, scraps of fabric for patching and sustainable yarns for doing the sewing. They also have tutorials on their website
• thoughts about zip options - I think the best option for me is to avoid zips if at all possible, for example use buttons or ties instead
• tips about sustainable knitting
• Fill is probably a good source of bulk sustainable washing up liquid for processing fleece
• Maria Sigma writes about her sustainability choices
• Teemill might be a not terrible option for print on demand tshirts, since they take back used clothes and turn them into new products. Is this better overall than printing by hand on shirts from charity shops? Probably?
• this naturally-dyed wool thread from DMC??