Paying for items and services with cryptocurrencies? It has been possible for many years.
There are mainly three reference points to look for in the various cities around the world where Bitcoin is accepted.
On 𝕮𝖔𝖎𝖓𝖒𝖆𝖕 there is a world map of all those who have declared that they accept payments in cryptocurrencies, with filters by product category (similar to Coinmap is Globimmo).
Site: Coinmap

As for the physical stores, and in particular those that sell food, you can consult 𝓢𝓹𝓮𝓷𝓭𝓑𝓲𝓽𝓬𝓸𝓲𝓷𝓼, where you can find different maps divided by product categories. Here are lists of purchasable items.
Site: Spendbitcoins

One of the first stores to accept payments in Bitcoin was 𝓞𝓿𝓮𝓻𝓼𝓽𝓸𝓬𝓴, a Salt Lake City e-commerce site that sells furniture and related products around the world. Not only Bitcoin, Overstock also accepts the Lightning Network (for micropayments), Dash, Dogecoin, Litecoin or Ethereum
This shop bills over $ 1.5 billion.
Site: Overstock

Another site where you can shop online by paying in cryptocurrencies is 𝕎𝕖𝕊𝕙𝕠𝕡𝕎𝕚𝕥𝕙ℂ𝕣𝕪𝕡𝕥𝕠, which offers many types of different products, from books to electronics, clothing, collectibles and digital goods.
It is a site with more than 500 purchasable products and the possibility for anyone to become a seller. A seller can apply fees.
Site: Weshopwithcrypto

A real decentralized market is 🅾🅿🅴🅽🅱🅰🆉🅰🅰🆁, or P2P software that allows anyone to actually sell or buy any product by paying in cryptocurrencies.
I had already talked about it here: How OpenBazaar Works: The Decentralized Market. Among the various categories supported there are also food and drinks, and since it is not a company or an organization, but an open source P2P software, its use is completely free, without restrictions.

🅾🆁🅸🅶🅸🅽 (🅾🅶🅽) is a platform for building decentralized markets (similar to OpenBazaar). The interesting thing is that by carrying out operations it is possible to earn their cryptocurrency. What operations? A campaign is added every month: Origin tokens can be earned by sharing articles, likes on their page or inviting people.
1 OGN is worth about 20 cents today. The first month of registration can be reached easily around 20 dollars.
Later it depends on the campaign being put up. Tokens can be spent on their market or in the future exchanged on exchanges (for example on Binance).
You need to download the app: Origin (Download)

For those who want to use Bitcoin and other cryptocurrencies (Dash, Dogecoin, Ethereum, Litecoin, Lightning) to pay on traditional websites, there is Bitrefill which sells vouchers payable in cryptocurrencies.
Buy vouchers by paying in cryptocurrencies on ░B░i░t░r░e░f░i░l░l░.
Which vouchers can be bought? Amazon, Google Play, Skype USD, Netflix, Apple Store, Steam, Alitalia, Bottega Verde, Bwin, Car2Go, Carrefour, Conad, Bol.com, Flixbus, FootLocker, League Of Legends, Hotels.com, Nike, OVS, PaySafeCard, Q8, Playstation, Spotify, etc.
Site: Bitrefill

Alternatively, you can always use debit cards, such as Eidoo. Other cards are that of Crypto.com, Bitpay. In particular Crypto is an exchange that allows you to earn $ 50 when registering. In the image below it is then explained how to redeem them. The MCO Visa Card is very interesting.