Larger alternative for organic waste instead of Variera 2 liters

Hello dear Ikea fans,

I have a pull-out with two 22-liter buckets under the sink in my Metod kitchen, one for residual waste and one for packaging (green dot)
... something like this:


In one of the two buckets, I have hooked a small 2-liter bucket for organic waste, but despite being a single household, it fills up quite quickly.


Has anyone of you perhaps found an alternative that is a bit larger (ideally 4-5 liters) and can also be hooked into the large buckets?

Thanks & best regards,
Werner

Why so much residual waste? When I separate paper, glass, packaging, and organic waste, almost no residual waste remains and the 2 liters are enough for the residual waste.

Otherwise, take two 11L buckets, one for organic waste, one for residual waste.