A small dev shop in my view is a company (1-20 employees) that typically develops bespoke applications as turnkey projects, either from scratch or leveraging some existing stack (e.g. Wordpress applications, Salesforce applications, etc.)

I would look for companies that describe themselves as:

- Website design agencies

- Creative agencies (look at their webpage if they also have development and not purely design)

- Design & Development agencies

You should be able to find a handful just through a Google Maps search.

Reach out to them and ask if they could use some junior development support, and if there's a particular area they need support in.