You no longer have to leave your home to get food and drink. The following delivery services are currently available in Riga.

Groceries
Supermarkets are open and some also offer special shopping hour for seniors and others who are at a higher risk of contracting the virus (usually 08:00 - 10:00). Greta Thunberg might not approve, but plastic gloves are also provided when entering each Rimi supermarket, as well as hand sanitiser. They also have a delivery service, but bear in mind that it also offers a pick-up service for a discounted price.  The Maxima supermarket chain also has a delivery service available in English.
Meals
The city's oldest and most revered Indian restaurant also offers delivery and even provides a 15% discount if you pick up your own meal. See Indian Raja's Facebook page for more details. For pizza, sushi, vegetarian meals and international cuisine in general, it's hard to beat Vairāk Saules who offer a deliver service as well as social distancing at their restaurants. There are also two major delivery services for restaurants: Bolt and Wolt​​​​​​.
Beer & Alcohol
Although not necessarily an absolute must to survive, local craft brewer Labietis has created a delivery service for their highly-acclaimed brews. You can also order beer for delivery from local craft brew shop Lauvas Alus and from the Valmiermuiža brewery. The huge alcohol warehouse Spirits & Wine has also started its own delivery service as a result of the pandemic. Alcohol deliveries to private citizens were prohibited before Covid-19, but the Latvian government has apparently decided that the risk of cabin fever was too great without a beer or a glass of chardonnay. Finally, we also have good news for wine connoisseurs. The French wine boutique Ervins & Filles has also begun delivering it fine wines and Champagne to locations within Riga. Contact the father and son team for prices and availability at ervins@eidoss-e.apollo.lv (minimum order €30) or message them on Facebook.