Miniature kits of travel-sized toiletries are a great idea, but they are terrible value for money.
Instead, collect all the samples you get on magazines, by mail and by scrounging mercilessly at the cosmetics counters in department stores. Shampoo, conditioner, day cream, cleansers, night cream, toothpaste, sun lotion, soap and perfume can all go into making your own mini travel kit ready for your next vacation. Boys, you can do the same with aftershave, toothpaste, soap and shampoo samples etc.
It saves space in your luggage, saves pounds in weight and these mini sachets are all well under the 100g liquid allowance so you can even pack them in your carry-on luggage.