Uses for a mini-tx system?

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Hi folks,

wondering what to do with this:  I retired a mini-TX based kitchen PC
(SWMBO complained it was too slow!) and am now wondering what to do with
it.
Unfortunately, it only has a single network port so the "obvious"
firewall
is not an option.
I could use it for DHCP, but that seems such a waste just using it for
that.

any suggests as to what else can I do with it?
Nothing rude please ;)

cheers,

Tony