Firebox is one of our very favourite online shops, because it somehow manages to find really weird stuff that you somehow really want. It's also great for presents, especially for hard-to-buy for types.
For Black Friday, the site is doing a 3-for-£30 offer on loads of its products, including things that cost up to £19.99 individually.
Bargs to be had for a tenner include Pusheen Slippers (OMG squee):
And those excellent N64 cartridge soaps from the main image.
Alternatively, if you prefer not to know what you're spending money on, the Black Box could be the one for you:
It claims to contain £130-worth of 2018 Firebox stock for £74.99, but Firebox usually doesn't have many in stock (we've seen it sell out many times) so get on that if you want a box of excitement/Secret Santa presents. It could be anything – it could even be a boat!