Buy G9 bulbs that can be used as a 40W incandescent bulb
Here you will find light sources with the G9 pin socket that can be used as a 40W incandescent bulb. They work alone in a lamp, or in ceiling lamps with 1 to 3 bulbs where you want a lot of light. They also work well in wall lamps where you need more light, for example in a bathroom. You can use a 3 step dimmable bulb, controlled with your normal switch, to adjust the light without a dimmer.