Here is a collection of GTK software to try this weekend, these tools are have a look at your hardware informations with CPU-G ,merge multiple documents with Couturier ..
CPU-G is an application that shows useful information about your hardware. It collects and displays information about your CPU, RAM, Motherboard, some general information about your system and more.
Couturier is a PDF merge application for the GNOME Desktop. It allows to merge multiple documents like PDF or images into one single PDF document.
GSmartControl is a graphical user interface for smartctl (from Smartmontools package), which is a tool for querying and controlling SMART (Self-Monitoring, Analysis, and Reporting Technology) data on modern hard disk drives. It allows you to inspect the drive’s SMART data to determine its health, as well as run various tests on it.