Segmentation done properly
Putting the IoT gear, the guest traffic, the work laptop, and the home lab on the same flat network is the most common thing we find and the easiest to fix. Proper VLANs with firewall rules that are written down means the smart plug cannot see the NAS, and you can prove it rather than hope it.
Home labs and private cloud
Proxmox, TrueNAS, Docker, local LLM inference on a GPU that is not doing anything at 2am — if this is the direction you are heading, we build it as a system rather than a pile of services, with backups that have actually been restored from at least once before handover.
Automation that outlives vendors
Home Assistant with local control means your lights and locks keep working when a manufacturer sunsets an app or an account. We build for the day the vendor loses interest, because that day always comes.