SE-TrayMenu lets you to add and manage shortcuts for you favorite applications, documents, folders or files via a customizable popup menu. You can quickly add executable files, frequently used applications and installed programs from Start menu.

From the developer, "Use SE-TrayMenu to get quick access to applications and system commands via a customizable popup menu. You can add various elements to your Windows system tray - programs, documents, folders or files, Internet links and set up shortcut keys to access these elements. You can drag'n'drop elements or add frequently used applications and installed programs. Clear interface with multiple languages support (English, Deutsch, Hungarian, Swedish, Japanese, Chinese and Russian) is customizable and easy-to-use. You can select one of pre-defined layout and color scheme or customize interface to your taste.
Portable version of SE-TrayMenu is available and you can use it everywhere - just copy application executable file to your USB flash drive and work with program on any PC."

The portable version can be found and downloaded from the author's page here.