Now, this is so simple that it probably doesn't need an entire post to itself. But that is fine, it has one.
Have orange peels left from your lunch? Put them in a jar with white vinegar and leave on the counter for around 10 days. Take the peels out and you're done.
This is a great cleaner for floors, basins, showers and counters. You can use it full strength for tougher areas but generally best to dilute with 50% cleaner to 50% water. I put mine into a glass coke bottle salvaged from a relative's bin and the sprayer from an eco cleaner fit the bottle! Yas upcycling.
Citrus works as a degreaser, stain remover and air freshener while white vinegar is a disinfectant.