Beej

In WordPress, attachments default to having their own pages. Sometimes, 
this is not desirable, as in search engine results. Use this small plugin to 
redirect your attachment pages to the post parent using a 301 redirect 
(post parents are also searched for by post name). If an attachment parent post 
cannot be found, it redirects to your blog home page with a 302 redirect.

Attachment Page Redirect X

Redirect attachment pages to their parent page (301), when possible, otherwise to the blog home page (302).

chrisguitarguy

Archive Disabler allows you to disable WordPress’ default archive pages. It does this by either redirecting those archive pages or causing them to throw a 404 error depending on your settings.
You may want to do this if, for instance, you didn’t want to expose post format archives to the world. Instead you could redirect them to the home page of your site.

Archive Disabler

Archive disabler allows you to "turn off" some of WordPress' built in archive pages.

Attachment Page Redirect X vs Archive Disabler