There is definitely a better way to make use of your Post it notes than putting them on a shredder after you have scribbled all over them. In your study area, all sorts of paper materials, including your colored and used Post it notes, are viable composting materials. In cases where you are unable to resist bringing food in your study area, you can also use the leftovers from your study area to help fill up the compost pit you have created.
Pet Kennels and Cages
Do you find pet hair irritating? The thing is, you can also use pet hair as part of the organic materials that you can use for your composting pursuits. Wood chips from your playful pets can also be collected and put in the compost bin. If you are dealing with a bird cage, even their used-to-be despicable droppings may be used to your advantage.
The backyard is one of the richest places with which you can find organic material like bee droppings, hay. Pine needles, match residues, leaves, herbs, chicken manure... the list just goes on and on. all you have to do is acquire some observant eye and a huge bag with which you can store the various discoveries you can find in your garden or backyard.
A Word of Caution
Despite the wide variety of items that can be considered for composting, there are still exceptions to organic materials. Never include diseased plants in your compost pit, as well as any form of weed. Also part of the list of things that you are not supposed to include as composting material include dead animals, feces of your pets, bread, meat parts, dairy products, grease, grains, cooking oil or any derivative of it.
Another thing to consider is the size of your compost and the ratios you need to be mindful of to make your compost alive and kicking all the time. This way, you will never have a dull moment in filling up your compost bin.