I don't have a spare computer that I think is capable of it. Yet. May have one coming within a couple of months though. I also need to do a bit of research on how to set it up, but I see that as the smaller problem. I don't know exactly what's involved, any risks to the BTC I put into it, potential fee revenue, how automated channel balancing has become, etc. If I need to manually balance it several times a day, it won't work, as I don't work from home and can't take breaks from work to do it by remote.
Discussion
You can run a lightning node from an android phone. Performance req is very low.
I do have an old netbook laying around. Do you think it would be enough? It's Intel architecture though, so it might be hard to find a working Linux distro for it nowadays, at least of a variety that I can use well enough...
I'm sure it has plenty of resources to run a full node + lightning. There are plenty x86 Linux distros. All you need for a full node is storage. If you're just doing lightning, not even that. Although you would be relying on someone else's full node to broadcast transactions for opening channels and what not.