Based
on our travel experiences, we recommend using one of these backpacks
and some combination of 3-5 Eagle Creek packing cubes/folders,
which come in a variety of sizes. This method of putting things
into "compartments" helps keep everything organized
and separated, and it maximizes your available space. Most importantly,
it also allows for super-easy packing and unpacking, which is
something you will be doing every day or two during your travels
in Europe. A ticket organizer and a chain/lock will also come
in very handy.