I was at Target last night picking up some packing items for our cruise to Alaska. I am using Calgon's packing list/suggestions and my husband really likes the idea of using backpacks and only checking one hard suitcase. Expecting to pay about $30 for a decent quality backpack, imagine my surprise when target had their "dublin trails" backpack cut in 1/2 from $30 to $15. I didn't want matching ones for my husband and I at first but I grabbed the last two. Who cares what it looks like if it does the job and I saved money. In addition I bought a hanging sweater organizer (wider than shelved shoe organizers) and a small toiletry bag that comes with soap and toothbrush holders as well as a compact mirror and pop up hair brush (it has a loop for hanging as well).
Just thought I'd pass the info along to the non-seasoned cruisers who don't have this packing thing down yet (or the very experienced cruisers who vacation so much they need new luggage).