Two things we've started doing is using old newspapers as bags for biowaste. It's very easy to fold them into bags, you save money by not havig to buy the biowaste bags and those "biodegradable" bags aren't actually as biodegrable as they say. They're basically just bad plastic that breaks a bit quicker than a black bin bag.
The other thing which we've had for quite a while now is Dubia (Argentinian) cockroaches. If it's plant matter, they'll eat it. Old banana, pepper stems, cucumber ends, oranges that have gone bad, celerey ends, carrot ends, etc. they'll eat them all. I've actually set them up in a bioactive tub with soil, springtails, woodlice and various tiny beasties so there is no mould, no smell and the cockroaches are doing VERY well. We started with about 50-60 last year and we now have hundreds. I already had to sell some off because we had so many and I've now had to seperate off a load into a seperate tub to be sold off. So it's all well and good that they are eating the scraps but what benefit do they bring? They are basically high quality fertilizer factories. I haven't made use of their abilities quite yet (been wanting to ensure they have a strong stable population before messing around too much) but my plan is to have them helping with the vegetable patch
I highly recommend them as they are so easy to look after and breed faster than rabbits, the extras being readily bought up by people looking to feed their pet reptiles. Gestation is just 28 days and each female will have 20-40 babies at a time, nympths will mature in 4 to 6 months and the adults live for up to 2 years. All this means a population explosion in no time.