I'll offer Uniqlo socks.
Yesterday I got 4 pairs in different colours. Cotton, good sizes (I have size 9 feet) and many many colour options. Super comfy & my older pairs haven't faded at all.
I have mint, bright pink, apple green, lilac, mustard and dark purple.
4 pairs for £12.90 a fashion bargain.
www.uniqlo.com/uk/en/product/colourful-50-socks-459574.html
What's yours?