My daughter's new job will involve her in trips to Europe, one or two nights away at a time. She has a good carry-on bag but is hunting for a practical, reasonably capacious laptop/briefcase to take along with it. Yes, it's for work, but she would like something other than same-old black ballistic nylon candidates to choose from. It needs to hold a 13" laptop safely, phone, papers, etc as well as in-flight clutter like ipod and headphones, toiletries and the rest. Light but tough, preferably with a bit of style but not a fashion label item, and okay to take into meetings. It must slip over the handle of her rolling case. Any recommendations? She's based in London. Thanks.