Many years ago, coming back from REP/PNH into BKK
for a few days before going home TPAC,
I brought a case of Angkor cans in my duffle.

I didn't declare it, was willing to lose it in transit,
and it was mildly amusing for friends at home.

OK, if you have been watching
a lot of "Locked Up Abroad",
you may not wish to do this.
I probably wouldn't do it again either.