If I am travelling by any means other than car I always like to take care that my lotions and potions don't leak out all over my nice clothes. To avoid this I will put shampoo and conditioners in a large, plastic zip-lock bag. That way if they leak I won't find my nice top all covered in shampoo or conditioner!
I also use the smaller size bags to keep things together in my cases.
And as well as taking the bags full of things I always take a handful of different sizes for bringing things home (Remember I do like to bring things home from far away places!).
Another travel must take is bubble wrap. I get loads of parcels delivered and therefore save lots of bubble wrap through out the months - you can never have too much bubble wrap! Bubble wrap doesn't weigh much and I use it to add extra padding on the outward leg of my journey however it is invaluable for wrapping any jars or slightly delicate items for the homeward journey. I have used it in my hand luggage before to wrap those things too delicate to go into the checked-in baggage as well.
The one jar I bring with me everywhere is my coconut oil which I put in a zip lock bag and wrap this in bubble wrap - better be safe than covered in coconut oil!
Do you ever use bubble wrap or zip lock bags for travelling - please share your tips in the comment section below.