you know there is a special spot to hide stuff in on a plane.I dont know how many brownies it will fit,but you know they wont search it.
god help you if your talking about him sticking some weed up his ass. Have you ever done that? Seems more like something a crack head would resort to than a stoner.
Use something that they would have to fuck up in order to search, They will be much less likely to tear that apart by mere suspison.
If nothing else when you get there, buy a cheap radio or some type of device that easily screws together, and hide the bud, hash ,or hash oil in that. Dont use stuffed animals, they are fucking targets because they are used so often.
If you leave the bud as bud and attempt to ship it then you should be meticulous about making sure no smell gets on the outside of the bag from your hands. To do this, wash your hands, open the bag and have someone hold it open, put on rubber gloves and put the bud in, take gloves off and seal the bag, tape it all over and do that several times.
ship it under a fake name to a fake name @ your home address (as long as your grow op isnt there, if it is ship it somewhere else). @ least that way if its found you arent accountable, you dont know either party or why they used your address.