How to report negligible Amazon Affiliate income

Between January 2021-January 2022, I made ~$120 through Amazon Affiliate links.  Amazon doesn't give me any sort of tax form because I made less than $600.  How do I report this income?  Do I need to calculate from based on calendar year or tax year?

 

I tried to report as "Other self-employed income", but it's asking what "type of income" and gives the example "cash, checks, or 1099-K", so I'm not sure what to enter.