Put a dropper post on your cargo bike
Unlike other kinds of bicycle, a cargo bike tends to be a family utility vehicle. It does a larger variety of tasks, and is usually shared by a couple of riders. When you hop on the bike, it might not be setup right for you - the saddle at the wrong height for example. If the bike is shared by riders of vastly different heights then more often than not you'll need to make some adjustments before riding.
Why not make that easier? Put a dropper post on your cargo bike to make quick adjustments a breeze.
A dropper post is a seat post whose height can be adjusted while you're riding the bike. They are popular with mountain bikes where you might want the seat up high while you're pedalling, and then down out the way when you're riding downhill. Essentially, they are like a gas lift office chair, where you can pull a lever and the saddle rises, and if you put your weight on it, it goes down. Infinitely adjustable saddle height.
A dropper post is also far more convenient than the "quick" release that you see on most bikes for adjusting saddle height. For me it's always a fight to get the quick release tight enough to stop the saddle moving around, and the saddle will tend to twist and drop over time. You also can't adjust the height while you're riding.
Most dropper posts are lever actuated with the lever up on the handlebars. This gives convenient access for adjustments, but means you need to route a cable from the bar to the seat post. However, you can get posts with the leaver directly under the saddle. Adjustment is slightly less convenient, because you need to remove a hand from the handlebar, but installation is way easier, because there is no cable routing.
We recently installed this KS E-Ten Lever Dropper Post onto our Cube Cargo. Installation is super simple - just remove the saddle from the current seat post, install it onto the new dropper post, and then put the new seat post in place and tighten. The installation process will take 5-10 minutes and you are away.
What's great about the dropper post is how quick and hassle-free adjustments are. If you share a bike with someone shorter or taller than you, you can quickly make an adjustment before you leave on your journey. No tools, no fighting to get the quick release tight enough to stop the saddle moving. The saddle can't twist as you are making adjustments.
Even if you don't share the bike, having a dropper post is really convenient. You can raise the saddle height taller if you're on a long ride and want a more comfortable pedal stroke. You can lower the height if you are carrying a heavy load, or in a high-traffic area where you want more stability to manouvre the bike.
It's a quick win that you should definitely try!