First day supplies for starting daycare.

Hello mama’s, My LO is starting daycare next month (She will be 18 mo old and in toddler program) and I have to give her a sleeping bag or nap mat blanket. Can you recommend what is working best for your LO at the daycare? The daycare told me to buy from Amazon and when I googled “blankets for toddler daycare cot”…strangely only Amazon links came up. Nothing at Walmart or any other store 🤔! If you can share where and what you bought , that would be really helpful. Thanks ! Oh one more thing… do we need to get a small bag pack for them too ? And what do you put in it? The only thing I can think of is her water bottle.