Freeware Shorts: Keepboard (Cross Platform Clipboard Manager)
Keepboard (Version: 2.1 as of this post) is a simple, light weight clipboard manager. It supports both text and images. Unzip the 1.5MB download and double click on the Start.vbs file to run the program.
Using the default Ctrl + C keys Keepboard collects items and keeps them in Clipboard History, clicking on an item presents a preview which is most useful in the case of image items. To further ease of use Keepboard can save items to groups and keep up to 2000 items in each group. Right click on any item to send it to a group, existing or create a new group on the fly, then using the Saved Items tab view those permanently organized. Within the saved items each item can be named as well. Right click, choose Open selected item, type a name and click OK. Later you can narrow down or filter all saved items by choosing a group and typing in the Name field to find items as you type (see images).
Keepboard can be paused to not collect any clipboard content via its Clipboard menu. It is cross platform (runs on Linux and Windows machines) and requires Java.