On a cold, rainy day take the ingredients for a luxury hot chocolate into the office - a good hot chocolate mix, squirty cream, chocolate sauce and marshmallows - and make everyone a cup to cheer them up.
Help a family in financial need by cooking them a meal, bringing them groceries, helping with DIY, giving them clothing, etc. Do it in a way that makes them feel good about receiving your gift.
Be kind to yourself by eating healthy, natural, nourishing food. Try to eat a rainbow of colours and drink lots of water every day. Eat mindfully and slowly - appreciate the taste, texture and smell. Be conscious of what you consume and your body will thank you for it.
Ordered more than you can eat at a restaurant? Even if you don't want it ask for a doggie bag and offer it to the first homeless person you see.
In good weather host a BBQ for people who don't have an outdoor space of their own to enjoy (like friends who live in flats).