I'm a big fan of using googly eyes in crafts, but that's not the only thing I do with them. For example, check out my all-time favorite googly eye post. But if you want to have some real fun, glue googly eyes to packages in your cupboards and wait for the family to discover them!
It takes some experimenting to find just the right size for the larger logos.
The tiny ones are best for the smallest faces.
The Starbucks mermaid doesn't look that much different with her googly eyes!
When buying googly eyes, I recommend getting a variety pack like this one (affiliate link). The self-adhesive googly eyes are convenient and it covers the range of sizes I keep on hand (4 mm - 25 mm). That's hours of fun you've got there.