Node

For all nodes (pages)

Have print / .pdf options like offered with http://drupal.org/project/print

Have teaser display the "read more" link closer to the end of the text, possibly using http://drupal.org/project/ed_readmore

Breadcrumbs would be nice: http://drupal.org/project/custom_breadcrumbs

Use the "add this" or "share this" feature for each node: http://drupal.org/project/addthis