I've had an older Mu for some time for travelling. There are much cheaper copies, and alternative designs, these days* but I can't vouch for their quality as I've never used them. The Mu seems well-built and after many uses still feels solid.

[*] https://idaffodil.co.uk/products/slim-foldable-usb-charger-a... to pick one at random from a quick search, or https://www.amazon.co.uk/dp/B07VDJLD1Q/ for C-type though that is only 15W not 45W like the Mu C-type models.