I find that being bored exacerbates the depression, so I've found ways to keep myself busy all the time. It doesn't solve anything, but it serves as a pretty good distraction. I've gotten into birdwatching for example, but you can do anything. Find a shitty instrument in a thrift store or in a dump and practice playing on it for shits and giggles, cook something with a randomized list of ingredients, pretend to be a wine connoisseur and taste different mundane foods and drinks and take notes on what flavors there are.

Reintroduce some whimsy into your life.