Tallacman's Tasty Templates are a collection of templates for core and 3rd party blocks that may prove useful*. 

Currently, it offers templates for: 

1. Next Previous Block - Return to the previous page
2. Simple Gallery - Instagram-like filters!
3. Content Block - provides a multi-column template
4. Page List - simple inline list
5. Image - displays as figure/figcaption and displays the title as the caption
6. Autonav - sitemap
7. Horizontal Rule - 2 templates
8. Search - puts the title into the input with placeholder

Anyone that leaves a review may suggest improvements or new templates.