AutoType
AutoType is an automatic text-insertion ('send keys') utility. Add as many text clips as you like to AutoType and organize them into named categories and subcategories using the dialog shown in the screenshot on the left. Each clip has a short title and text of up to 4500 characters which can optionally include "prompts" (placeholders for variables you'll insert later).
Whenever you need to use one of these clips, simply press a hotkey to display the AutoType menu. Click the title of the clip you want to insert, and its text will be sent straight into the application you're using (bypassing the clipboard), prompting you for the text of any placeholders as it does so.
AutoType can work alongside Clipboard+, automatically including your last ten clipboard items on the menu too.