How did life on planet Earth start and flourish without: Sellotape, the Hoover, Sliced Bread, Marmite (for some!), D.I.Y's Black & Decker Workmate, or the Guitarist's “Fender Strat."? . . . pretty tough, I guess . . . . . . I now emphatically add this Balliihoo 5 Gallon Pressure Barrel with S30 Piercing Valve Cap and temperature indicator that puts this item near the top of this sacred list of life’s absolute essentials. Mine just keep going and going, brew after brew without fuss.
A Long Nylon Brush, also available from Balliihoo is a good addition, to enable cleaning inside the barrel between brews . . . . . unless, of course, you know someone with 2" wide hands to get in there with the bathroom nail brush! . . . . . also use specially formulated, Pressure Barrel Seal Grease available from Balliihoo to ensure a good airtight seal with no fear of Contaminating the brew.
To ensure good pressure retention, there is a very useful Steel "C" Spanner for tightening the tap into the Barrel available separately from Balliihoo.
Finally keep a few replacement 'O' rings to ensure a perfect seal every 3-4 uses . . . . . Life's so good when you're organised!