Normally teachers can use a deduction outside of itemized deductions for in-classroom expenses. Most years it is $250.00. This year there is an even bigger deduction for unreimbursed expenses related to COVID-19. 2020 only: Covid-19 expenses for personal protection, webcams, microphones etc. Examples throughout the years: Books Crayons, pencils, pens, erasers Snacks Tissues Construction paper or other bulletin board displays Supplies for decorating or teaching such as posters, knick-knacks