Add Custom Icons to my Shopify Product page. What is the best way to do so?

Hi, I would like to add Custom icons (such as ones in attached) for my Product page.

Most apps on Shopify don’t provide such versatility.
Is there a way to hard code a custom icon?

If I am able to create a custom icon from an external site, how am I able to add as SVG/PNG icons under my products in a concise manner?