Aloha-Plugin-InitEditableContents is a project mainly written in ..., it's free.
A regex-based init tool for editables, which allows you to dynamically prefill or replace editalbes
On standard behaviour the plugin will automatically prefill empty editables with p-tags. You can specify your on regular expressions and replacements for each editalbe to tackle more sophisticated replacements, like replacing all occurences of "Aloha" by "Aloha-Editor" (well, ok, this is not tooo challenging either...).
View plugin.js for config examples.