A 275V rms varistor from Würth Elektronik.
26-3140
Joyin JVR07N470K65YU4 30V 1.8j Mo Varistor 7n470k
from only£0.070
26-3255
Joyin JVR14N431K87YU4 275V 75j Mo Varistor 14n431k
from only£0.085
58-5506
Schaffner EMC FN 9222-6-06 6A IEC inlet Filter
from only£5.01
26-2600
Fair-Rite 0431173951 4.9mm 208R Snap-its Cable Core
from only£1.29
65-3611
Taiwan Alpha RV16AF-41-17K-A100K-3 100K Log 16mm Metal PC mount Potentiometer
from only£0.518