Granularity vs. Simplicity for Small Non-Profits: To Use Products or Not

We are looking for some community feedback on how your small, non-profit documents purchases. We are migrating from eTapestry, in which we simply log purchases the same as donations but with a note for the product purchased.  Management here would like to determine if small non-profits generally take this simplified approach in Salesforce as well, or if you are populating product records and linking them to opportunities.  If the latter, how have you labeled Opportunity Products, or have you left the name as is?

Note that our product inventory and sales are managed in Shopify.

Thanks!