Originally Posted by LTN Phobia

I carried 10+ packs of Tim Tams from Australia at friends' request. I briefly considered carrying them as hand luggage but decided I found it a bit much.

So I packed them with 4 large sealed ice blocks around them, and then wrapped them all together in bubble wraps, and placed them in a chiller bag, and then in a suitcase (in an air conditioned place).

They survived Australian heat (height of summer) and Singapore heat OK, and did not have any sign of melting.