What would you want as a pre-marathon “I’m proud of you” or “I believe in you” present?

I’m looking to get my husband a little present before his first marathon in a couple weeks. He is a former college athlete but newer long distance runner and has been so dedicated to the process over the past year.

He’s all set on his shoes, nutrition process, hydration aids, etc. but does anyone else have any ideas of cute little things? When we were 15-16 he told me that if he ever hypothetically runs a marathon, he wants a dozen krispie kreme donuts so I’ll already have that covered ha.