I do a great deal of international travel and always pack this kit in my checked baggage, since the airlines consider matches to be contraband; I’ve removed them for that reason. As for the duct-tape I’ve never seen a need, but I may consider adding a couple sheets of rip stop nylon tape which I have used on several occasions to repair rips in my down sleeping bag and parka. In fact this kit is coming due for replacement of dated items and I’ll add the rip stop tape then.