Adding a tipping option is a marketing campaign that you usually see inside of in-person or brick and Mortar stores, primarily in the food industry. With the shift that COVID brought, it became a way to help support small businesses and restaurants to keep going, and now with the use of Shopify, you can add it to your store.
With any Shopify plan, you have access to the “Buy Button” sales channel. If you have an external website or a blog, you can use Shopify buy buttons to embed your products. They display product photos, descriptions, and pricing letting customers purchase products from where they are plus all sales route to your Shopify dashboard so you never miss an order.