I’m all about getting fast charging on the cheap.
With the NP3, I have two chargers that were inexpensive that I’ve tested.
Anker Nano II 65W non-PPS-enabled that charges the NP3 at 35W (retail ~ £15).



Anker Nano 3 (311) 30W PPS-enabled that charges the NP3 at 25W (retail ~£10).


Anything else out there that you have lying around that works well.
All of my PD chargers (think Mac) max out at like 12W.
Edit: my children have come up with this solution
