Turn an old glasses case that has been sitting in the back of that drawer into a great little manicure kit for traveling. It will even hold a miniature polish, just make sure the top is secure before putting the kit into your luggage or purse.

By Craftiness3
By jackie's from North Powder, OR
Mrs. Kathy C. from Northfield, VT
After an unsuccessful search of the Internet for some sort of insert to keep my bottles and mini spray cans upright, I ended up buying 6 soft sided "cozies" or soda/beer can holders made of thick neoprene. They are available in many craft stores, and I got mine for .50 each. They fit in my train case very well, and my cans and bottles are no longer rolling around. You might need more or less cozies, depending on the size of your case. They also protect against breakage, as they provide padding.
By Ginny from Murrells Inlet, SC
If you don't have samples of shampoo, lotion and body wash on hand, consider filling up film cannisters or small containers found at the dollar store with what you have at home. I usually collect all kinds of samples in advance to put kits like this together.
If you are going on a plane, consider storing these items in a ziplock bag so you can carry it on board. Check international/national regulations for liquid restrictions.
Other items you could add: Anti Bacterial Hand Sanitizer, Sunblock, Powdered Laundry Detergent, Birth Control (or similar), Hair Elastics or clips, Band Aids, disposable pair of underwear, mini hear spray or gel.
HAPPY TRAVELS!
By Lisa from Halifax NS
By Ginny from Murrells Inlet, SC
Source: In one of my thrifty tip books.
By Monique from Somerset, UK., Weston-super-Mare