
Upon a request by a user, I've updated Todo Emojis with a "paused" emoji:
https://www.producthunt.com/posts/todo-emojis
I went through a few variations of pause and play buttons, but they felt out of place in relation to the original, somewhat analog "strokes" of ticks, crosses, etc.
Following some discussion on Twitter, the small blue dash proved the most popular. Think of it as a "strike" mark, "progress" bar, or perhaps "on ice".
These emojis make it simple to create to-do lists in Slack just by adding icons and text - no plugins, services or additional UI required.