This espresso accessory holder is for a Tamp, dosing funnel, and espresso distributor. 

The specific dimensions were made to hold this set:

Amazon.com: Reoszeank 51mm Espresso Accessories Kit, Spring Loaded Calibrated Tamper, WDT Tool and Dosing Funnel Set Fits Espresso Coffee Machines and 51 mm Portafilters: Home & Kitchen

The holder is lightweight and easy to clean, also the design is sleek and simple. I added on the bottom some nonslip foam so that it doesn't move around.