PUCC 240v Led E27 3.5w/25w 2200k
3 steps dimmable 240lm/120lm/40lm black
This LED puck is dimmable with your current switch. You can and do not need a dimmer.
Just turn it on and turn it off and on. Then it becomes 120 lumens (half less)
The next position is then nice mood light.
Buy these in large numbers and you will receive an extra discount!