I use Zoom brand albatross style bars. They have long ends which give me more room for my shifters and brakes and grips.My daughter gets bored after about 2 hours in the bike but we rode as long as 5 hours on our recent tour. My daily trip distance limit with her ends up being about 50 miles on pavement and about 30 miles on dirt roads (assuming few steep hills). When she gets bored she likes to stop for lots of bathroom breaks. We had nowhere to charge electronics on tour, so they were out of the question. Next time I will take crayons and paper.
I may one day move to Jones loop H bars for the extra width, but the bars that I have are a pretty good $20 choice.