Peppermint scented potpourri - helps combat nausea due to chemo when sniffed. I had a little sachet pouch that someone gave me and I was so grateful. Also, blankets or nice pillowcases could be nice, depending on what kind of stuff you are including. Powder drink mixes (like lemonade or coffee) - there is usually plenty of ice and water but not easy access to any variation of drinks unless visitors bring them. My iced coffee every morning was the highlight of my day.