> If you're not, it sounds unreasonable for you to need to spin up your own DNS server.
If you're using a SOHO router, you're very likely to already be using dnsmasq; a DNS server. In that configuration, if you're using DHCP then you get your hostnames in DNS for free.
If you're not using DHCP and don't have a DNS server running on your network that you have figured out how to update with host IP addresses, then it's on you to select memorable static addresses. [0] This is a long-standing baseline fact of IP addressing for LANs and other private networks.
[0] Nothing prevents you from assigning addresses to your LAN machines in the fd00::/64 prefix starting from 1 (that is, fd00::1) and going up. The fd00::/8 space is for uncoordinated network-local addressing.
If you're using a SOHO router, you're very likely to already be using dnsmasq; a DNS server. In that configuration, if you're using DHCP then you get your hostnames in DNS for free.
If you're not using DHCP and don't have a DNS server running on your network that you have figured out how to update with host IP addresses, then it's on you to select memorable static addresses. [0] This is a long-standing baseline fact of IP addressing for LANs and other private networks.
[0] Nothing prevents you from assigning addresses to your LAN machines in the fd00::/64 prefix starting from 1 (that is, fd00::1) and going up. The fd00::/8 space is for uncoordinated network-local addressing.