Where can I get a laptop charger from in Brussels?

I've travelled out to Brussels for a couple days - like the NUMPTY that I am, I forgot my laptop charger but really do need to get some work done while I'm out here. So far, I've managed to co-opt somebody elses' charger who was kind enough to borrow it to me last night but I need my own moving forward until I get home.

Is there anywhere around the City Centre that sells USB C laptop chargers. I'm on a Lenovo ThinkPad T480s. How much am I looking to pay for the privilege? I've never had to buy a charger before.