My boyfriend is an apprentice and has asked for some specific things for Christmas … I want to make sure I’m getting the best of the best brands / quality so I thought I’d shot my shot here for advice

• unique and durable bungee cords who makes the best bungee cords? What sizes are generally needed?
• assorted funnels any must size needs or qualities I should consider?
• unique and rugged extension cord at least 15 feet are all extension cords created equal or are there features and brands that are more helpful than others?
• 3/8 to 1/2 adaptor piece I have no idea what he means by this.
  -half inch drive pneumatic impact wrench that’s adjustable I have no idea what this means or how to find one that’s adjustable. Which parts are adjustable?

Apologies if this is the wrong form I’m just getting overwhelmed with choice on google and thought I’d see what Reddit comes back with!