Here's a recent shot of my kids after taking them on our weekly grocery shopping routine. We stopped at a playground for a break on the way home. We load up the trailer with our groceries, and on this trip I think we had about five or six full bags in the trailer, as well as stuffed panniers. I keep a styrofoam cooler in the trailer for frozen items, it works very well and allows us to take our time getting home. The five year old rides the Burly trailercycle behind her mom, and the six year old rides the slightly modified Bike Friday tandem with me: