Perhaps it is the only coffee gadget that has made such a big difference in the quality of my life when making coffee. Next is a proper WDT tool for coffee distribution (the ones with the needles). These two tools are the best 10-15 euros you will spend on your coffee hobby (given the existence of a proper tamper and portafilter+portafilter basket). No matter how their price is not reflected in their appearance or weight, you ultimately understand it in the quality of the coffee you make and how much easier the process of producing a good espresso becomes.