Nine: Micropub for collecting data
The Micropub plugin helps me by creating an endpoint on my site for quickly and easily capturing lots of data. IFTTT, Zapier, Integromat, n8n can all help to aggregate this data too.
#HeyPresstoConf20

Here are some more in-depth details about how I use some of these tools and recipes/walk-throughs so you can too: Using IFTTT to syndicate (PESOS) content from social services to WordPress using Micropub.