How to Build Your Own Penetration Testing Drop Box

**TL;DR:** This report compares three single-board computers to determine the best candidate for a covert, low-cost penetration-testing dropbox and concludes the ODROID-C2 (with eMMC) outperforms the Raspberry Pi 3 and BeagleBone Black; it includes hardware specs, benchmark results (boot time, John the Ripper, Nmap, disk I/O), wireless adapter guidance, cost breakdown, and a detailed ODROID-C2 build and configuration walkthrough covering Kali imaging, Wi‑Fi AP setup (hostapd/dnsmasq), autossh reverse tunnel, and recommended tools.