Funky Penguin's "Geek Cookbook" is a collection of how-to guides for establishing your own container-based self-hosting platform, using either Docker Swarm or Kubernetes.

Running such a platform enables you to run self-hosted tools such as AutoPirate (Radarr, Sonarr, NZBGet and friends), Plex, NextCloud, and includes elements such as:

Automatic SSL-secured access to all services (with LetsEncrypt)
SSO / authentication layer to protect unsecured / vulnerable services
Automated backup of configuration and data
Monitoring and metrics collection, graphing and alerting

Recent updates and additions are posted on the CHANGELOG, and there's a friendly community of like-minded geeks in the Discord server.

This repo contains a CLI tool to delete all cloud (AWS, Azure, GCP) resources in an account. cloud-nuke was created for situations when you might have an account you use for testing and need to clean up leftover resources so you're not charged for them. Also great for cleaning out accounts with redundant resources.

This is the guy who created that sticker. You can buy them from Stickermule.

Really, really cheap cloud hosting. VM, bare metal, block storage, dedicated clouds. Data centers around the world. Claims 100% SLA and SSD storage. Multiple OSes, including Linux, OpenBSD, and you can upload your own.

First page of an explanation of building your own cloud infrastructure.

CozyCloud is an open source cloud application set that is personal, i.e., it's meant for one person to use for productivity and information organization. You set it up and it's yours, no one can take it (or your data) away from you. Comes out of the box with a webmail client which unifies all of your e-mail accounts, a notes and document editor and manager, a to-do tracker, a bookmark manager, a financial account manager, and an RSS feed reader. Includes a framework for developing new apps, which are appearing all the time. Built on top of node.js.

Github: https://github.com/mycozycloud/

Cozy is just what it says on the tin - it's a personal cloud that you access with your web browser. It has a contacts app, a feed reader, bookmarks, photo album, chat client, calendar, notepad, music player, and more. An appstore is planned for the near future. Easy to set up, you can even do it with cut-and-paste. Lightweight enough that you can run it on a RaspberryPi or Linux on a USB key if you want.