One nice thing about travel size toiletries is that you can try a new product without paying full price, or having a full size version around if you don't like the product.
I've got a travel toiletry bag that fits nicely in my suitcase, so I can keep all that stuff together. It's one that hangs up in a closet, too. I really like it and it's been to Aruba, Denver, Lake Tahoe -- everywhere I've been! Travel size toiletries fit into the compartments, so I'm ready to go.