Can I compost...
Vacuum Cleaner Lint?
Maybe.
Assuming it's regualar vacuum cleaner lint (dust, pet hair, human hair, skin flakes, bits of soil etc etc), then it can go in the compost heap. Tip it out of the bag (if it's in one) so you can reuse the bag and it can breakdown quicker.
However, if you've used any chemicals during the cleaning process (such as carpet fresheners), you should probably avoid composting it for risk of causing a chemical overload in your heap.
In category Household waste