Merry meet @AlwaysBackToOne!
Oh that’s so exciting- congrats to you on your upcoming adventure! 
I’ve never had any problem with crystals nor talismans. I usually have a few in my checked baggage and they’ve never been removed or messed with. I also wear crystal bracelets and jewelry on the plane (maybe it’s good that they weigh your suitcases, but they don’t weigh you lol- you can wear whatever you’d like so long as it isn’t deemed dangerous).
I would be careful with herbs as there are a lot of rules and restrictions around bringing life/fresh plants (foreign plants can seriously damage local flora and fauna), but you should be okay with dried herbs. Just make sure that any herbs you bring are in your checked luggage (not carry on), are sealed tight, and are clearly labeled.
There’s no guarantee though, and airport customs can be really picky at times (I once had maple syrup confiscated in China lol- more on that in the Traveling With Your Craft discussion)
As for spellwork, you might bring your Craft on the go by making a travel altar. And for a good travel charm to bring with you, I know @MeganB shared a video about making a travel charm:
Wishing you safe travels and blessed adventure, Drew! Blessed be! 