Update with guides and links, see comment) Pi zero for PiVPN & Pi-Hole; Pi 4 as torrent download station with PIA VPN mounted to Synology : r/raspberry_pi
How to Set Up a Torrent Box With a Raspberry Pi and an External Drive | by Mladen Kirilov | Medium
Make Your Own TorrentBox From a Pi : 10 Steps (with Pictures) - Instructables
Make Your Own TorrentBox From a Pi : 10 Steps (with Pictures) - Instructables
Make Your Own TorrentBox From a Pi : 10 Steps (with Pictures) - Instructables
GitHub - j-bill/torrentbox: Installation Script for a Raspberry Pi Seedbox
Build an Always-On Raspberry Pi TorrentBox - Pi My Life Up
How To Turn Your Raspberry Pi As A Downloading Client [Both Torrent And Regular Downloads] And NAS | Deep Focus