That's quite possible. You can do this using regular views, and then create templates that extend the template "admin / base_site.html" as follows:
{% extends "admin/base_site.html" %}
You can also do breading cramps as follows:
{% block breadcrumbs %}{% if not is_popup %}
<div class="breadcrumbs">
<a href="/admin/">Home</a> ›
<a href="/admin/yourpath/">Up One Level</a> ›
You Are Here
</div>
{% endif %}{% endblock %}
And then place the content you want inside the "content" block.