I have an old laptop lying around and I have been meaning to self host some stuff on it but never got around to it.
My biggest limitation is that I only have WIFI and I do not control the network. It’s basically your default residential WIFI network.
The only thing I actually need is self-hosted cloud. What can I utilize this laptop for?
You can, but if you don’t control the main router and can’t do any port forwarding, it will be hard to make it accessible from outside your LAN.