I have a playlist of inspirational Markiplier videos for light writer's block- the kind I can kick to the curb with a few smiles and warm fuzzies.
When I have really bad writer's block, the 'bang your head against a wall until your brains come out' kind, I... still haven't quite figured it out lol. Stress related writer's block is literally the worst and that's all it is lately. Forcing yourself to write a small amount every day, no matter what it is, can sometimes get the creative juices flowing.
Weirdly enough, I've found deadlines super motivating. The recent contest helped me actually write a little through the major block, but now that it's over, well... back to square one