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For something such as PiHole, your main machine may be overkill honestly. It can run on literally potatoes (or raspberries). That being said, if the price of keeping your machine on is not an issue, it’s perfectly reasonable to run something on it whenever it’ll be needed. If possible, potentially a smaller computer like a Raspberry Pi may work for this, or even a small online VPS (cloud server).
It’s kind of the same thing as a Raspberry Pi/Mini PC, though can be seen as more reliable (since someone else is being paid to make sure it doesn’t, or you and potentially many others will complain), as well as typically being very scalable if you require more power later down the line, as opposed to buying hardware for yourself. There’s many other reasons, but those are some of the main ones.
For me, something like PiHole for DNS-based Adblocking, as well as potentially a Wireguard/OpenVPN installation (via PiVPN potentially) for an easy adblocking VPN combination. Depends on the available bandwidth, however, but some lower powered applications, even up to a small personal Matrix Synapse server could be viable on 1GB Ram if not abused.
No categories, only available navigation option is “Random”, let chaos commence