Grab some off the shelf rPi hardware or an old laptop. Install nostr:npub1aghreq2dpz3h3799hrawev5gf5zc2kt4ch9ykhp9utt0jd3gdu2qtlmhct or nostr:npub126ntw5mnermmj0znhjhgdk8lh2af72sm8qfzq48umdlnhaj9kuns3le9ll, both have very easy to use tools. Nostr relay is offered on both, no real need for super technical knowledge as it will guide you through everything on both.