Here is my snippet for favicon links for TextMate.
# favicon links snippet for TextMate
#Activation: Tab Trigger: favicon
#Scope Selector: text.html
<link rel="shortcut icon" href="${1:/path/to/favicon}.ico" type="image/x-icon" />
<link rel="icon" href="${1:/path/to/favicon}.ico" type="image/x-icon" />
I hope you like this.