I'm probably late to the party on this one but one of my favorite apps lately is 1 Second Everyday*, a phone app that helps you take little video snippets of your life and stitch them together chronologically to make a movie. (If you saw the movie Chef, the son used this app in making the movie of his dad's food truck.)
You might be thinking that the last thing you need is another app or reason to take more photos/movies but I promise this one is easy peasy. No need to think up cleverly worded posts, no fiddling with things at the time you're filming, no need to pose or think about likes or followers. Just take a few frames of video now and then (the more candid and random the better) and later (you don't even have to do it that day) you choose which clip to represent the day and upload it to the app. There's something magical about capturing the lovely, mundane everyday moments as they fly by--and then seeing them in one cohesive movie.
You can also create other projects not based on the one-a-day format. When we went away this long Easter weekend (Australia takes a four-day holiday), I decided to do one to remember our time together: