Sample Sizes for Traveling Utilize sample size cosmetic items to put in your trailer for traveling. By Michaela Jaycox | September 15, 2019 | 1 minute read iStock When you buy makeup and skin products, hold onto the samples and stow them in a cosmetics’ bag in your trailer. If you stay at a hotel bring home the sample size shampoo and conditioners as well—they are great to have in the trailer for traveling. What did you think of this article? Submit Rating Thank you for your feedback!