+1 for Chas' comments above.
I use small greenhouse heaters instead, as I have a couple of metal cabinets and they get colder inside than chipboard cupboards would.
It's a bit naughty, but you can wire them in series (if you know what you're doing!), to halve the rated output, if you think it's too much. You can do the same for lightbulb sockets incidentally, but in both cases, if a bulb/element blows, you won't know which without a test meter. Only do this if they're not accessible to people.
I tried one winter with a couple of 60W heaters wired in series (i.e. 30W). It wasn't enough, so I've rewired to use just one on its own.
I also use
rust-inhibiting paper as drawer liners. It works, but has drawbacks: I'm not sure how long it works for, and it goes brittle with time. It's reasonably tough when new, but like tissue paper later, so tools destroy it if you're rough with opening/closing the drawers.
HTH,
E.
PS: Liberon lubricating wax is quite good as a water repellant, too. That gets used a lot on things like G- clamp threads, etc., as well as machine tables.