CMS is an utter disgrace. It enables resentful and pathetic men to pay an absolute minimum and then hide behind it and make out the daily parent is money-grabbing and entitled. I had to laugh out loud when CMS allowed my ex to pay his arrears off at a tiny amount that meant it would take eight years (!!) to pay off - I’ll just not buy her shoes or food for eight years then will I…and inflation means it won’t be worth then what it is now anyways.
It really does make my blood boil. Anyways, to answer the question - everything. Shoes, shampoo, head lice lotion, mortgage/rent, bedding, school uniform, food, electricity, travel, hair bobbles, mobile phones, sanitary wear, furniture, pens, winter coats, summer clothes, sun tan lotion, heating, cleaning products…the list is exhausting and his negligible amount does not cover it at all.
You truly should educate your children on this matter.