There are a host of options. Check out nostr:npub1aghreq2dpz3h3799hrawev5gf5zc2kt4ch9ykhp9utt0jd3gdu2qtlmhct for a great all-in-one package you can run at home, or our friends at nostr:npub15klkdfx9sh3y096a5jf895rcvkmkzvly2fm9dgxq6huqhp9576jsav4m73 to easily spin up a node in the cloud.