For today only, January 20, online retailer and mass consumption mega-corp Amazon is offering £10 off a £50 spend, no strings attached. Just enter the code BIGTHANKS at checkout to take advantage of the offer.

The big proviso is that the item has to be sold by Amazon directly, so anything from Amazon Marketplace sellers (including items "fulfilled by Amazon") aren't eligible. Gift Cards, AmazonFresh orders, digital products, and baby formula are also excluded from the offer.

The offer is ostensibly to celebrate Amazon taking the number one spot in the "UK Customer Satisfaction Index," a list of the UK's most helpful retailers compiled by the "UK Institute of Customer Service," a members-only club backed by over 400 companies. No, I hadn't heard of this particular institute until now, but the Index—which surveys 10,000 customers nationwide to produce a winner—is taken very seriously by retailers.

John Lewis was particularly miffed when Amazon stole the top spot from it last year, sending it tumbling out of the top three for the first time in seven years.

As for how best to spend your free £10 without going a penny over £50, I'd suggest picking up an Amazon Echo Dot, which lets you add the company's excellent AI assistant to any room without the need to pay for the (not so great) full-range speaker of the grown-up Echo. Other options include the excellent-sounding, if slightly garish AKG Y50 headphones (which have topped many a best-of list), as well as the sharp Logitech G403 Prodigy gaming mouse.

Personally, though, I'd throw caution to the wind and spend your free £10 on a bunch of totally frivolous nonsense you'd never otherwise buy. For instance, why not join the insect-eating revolution and pick up five whole packs of Jimini's Smoked Onion and BBQ Crickets. Mmm. Or you could buy this giant stuffed horse that stands over 1m tall—scary for both children and adults alike.

But really, if you're gonna blow £50 on anything, it has to be the ultimate in labour-saving devices: the Smart Breakfast Master Toaster. Not only will it get your morning toast to the ideal level of brown, it'll grill bacon and boil, fry, or poach your eggs too without having to sully a single frying pan. Nothing says "hey ladies, I'm single!" quite like it.