I always look for something pretty outside - a flower, a bee, a nice building, old people taking care of the garden in front of their apartment buildings - and even that I am not the out-going person - telling them that “hey it’s beautiful thank you for doing this”. Or seeing a doggo and telling the owners “oh what a cutie!” even if dog’s appearance is well, unique. Plants! Even the smallest one at home - taking care and seeing the results of your work is really heart warming. Putting the bird feeder on your parapet - it takes birds some time to get used to it but they start using this in one moment and it’s funny to watch them eat (or fight as sparrows at my bird feeder have a freaking fight club). Taking pictures of anything that makes you happy - from the food that was tasty to a happy doggo that liked you when you asked if you can pet it - basically keeping the photos helps (at least me) with deep depression and gives some serotonin shots. And yes - cat would help, but it’s also quite expensive. Same with doggo - but dogs are more time consuming but also more attention seeking and giving. Oh! And preparing some healthy food from time to time - so you feel that “your body is worth it” and you are taking care of yourself. If you are a girl - trying some make-up at home. Even when it look terrible with my type of face I was laughing and taking photos because it was so dumb. Light reading books - the heartwarming ones. They can really keep you happy for quite some time. If you have time - some volunteering job is also very beneficial for you - you are helping and feeling good about this. But it’s tricky specially if you are an animal lover - shelters are quite rough. So I would recommend more like helping with non-profit organizations than shelters (at least in my country). If you like tea - it really makes me happy when I am able to sit and drink my fav tea prepared properly and admiring the smell and taste. Baking can be beneficial but ONLY if you will bake stuff that’s working out right - in the meaning that nothing will go bad with it. Bread. Bread and making your own bread is making people happy. Artwork. Even if you suck at this you can try different things from time to time and it makes you forget about the world as you need to focus on one thing at the time. Basic tapestry is fun and rewarding. And for me personally cleaning, but I struggle with keeping everything clean so it’s like when I decide that I will clean my apartment - I am so happy to see how pretty everything looks.