The OpenStick is a $10 USB dongle built around a Qualcomm MSM8916 SoC — four ARM Cortex-A53 cores at 1 GHz, 512 MB of RAM (about 450 MB usable), 4 GB eMMC, Wi-Fi, a 4G modem, and GPS. It runs Debian. The installation is involved, but once it boots you have systemd, Podman, and a full Linux userland in a device smaller than a lighter. Passively cooled, silent, negligible power draw. The author's software stack is the real story. CastSponsorSkip connects to Google Cast devices and automatically skips sponsorship segments on YouTube — set-and-forget, near-zero resource usage. AdGuard Home (the author runs a custom fork optimized for large blocklists) handles DNS-level blocking of spyware, malware, and telemetry. After adding blocklists, 60% of DNS queries on the author's network are now blocked. The official version works fine with smaller lists around 200k entries. Zeroclaw is the most interesting entry: an AI agent harness supporting 30 channels (Telegram, email, WhatsApp) with integrations to major LLM providers. It idles at roughly 3 MB RSS — compared to over 1 GB for OpenClaw on the author's previous Kubernetes cluster. The author gave Zeroclaw root access to the OpenStick specifically, using Telegram as the interface to monitor logs and disk space remotely, even from low-signal mountain terrain. The blast radius is limited to the stick itself. Cloudflare Tunnel exposes services to the internet without opening ports, for free, with the acknowledged trade-off of Cloudflare (and potentially the NSA) having visibility into traffic. Beszel handles server monitoring — CPU, memory, alerts — in about 20 MB total, replacing a full Grafana stack the author found overkill. Dozzle adds a pretty Podman container management interface with overlapping functionality. Gatus monitors service health rather than server health, with notifications when a web server or database crashes. For reading, Fusion serves as an RSS reader in 22 MB of RAM — a self-hosted replacement for the late Google Reader and the $7/month Feedly Pro. Shiori archives bookmarks and their content in roughly 10-20 MB, solving the link-rot problem the author experienced with browser bookmarks. Diun watches for container image updates and sends Telegram notifications, using about 9 MB. The entire stack — DNS blocking, ad-skipping, AI agent, monitoring, RSS, bookmarks, container management, service health, tunnel, and update notifications — runs concurrently on 450 MB of usable RAM. Every tool listed includes its approximate memory footprint. The author treats memory as the binding constraint and has clearly benchmarked accordingly. This is a practical guide to extracting maximum utility from minimal hardware. The software choices reward anyone curious about self-hosting but intimidated by the Kubernetes-and-Grafana complexity ceiling. The OpenStick forces you to be disciplined about what you run, and the result is a stack that's more useful and more maintainable than many setups running on far more expensive hardware.
