fsquared

The F2 Tumblr Widget displays recent posts from the provided tumblr blog.
It allows the user to select how many posts to display, to restrict which 
posts are shown by type and tag, and to render the posts as either a list 
or a slideshow.
Posts can be displayed in full, as title only, or with an excerpt. Photo, 
video and audio posts will have the media displayed when the display type 
is not ‘title only’.
The audio player in posts can now be automatically resized to match the 
selected media width – this is enabled by default, but can be deselected 
in the widget setup.

F2 Tumblr Widget

This widget displays recent posts from a tumblr blog.

dechadou

This plugin will allow to import images from any Tumblr blog into wordpress. 
It will automatically create the posts with the image set as Featured Image.
You can also set the post format (Standard, gallery, etc), the ammount of images to be inserted and the status of the post (Published, Draft).

Tumblr Image Importer

This plugin will allow to import images from any Tumblr blog into wordpress.

F2 Tumblr Widget vs Tumblr Image Importer