For the check-through luggage
no.idea has the right idea (couldn't resist).
When I'm back in the UK I always return with at least 10k cheese - nothing fancy just big solid blocks of cheddar, Gloucestershire, Lestershire - whatever is on sale in Tesco's on the day before departure - the more matured & flavour intense the better (you use less that way & lasts longer) cheese sweats in the heat so return to the fridge immediately after use, freezes well though for long term storage, but tends to crumble :icon_e_sad:
Salami &/or black pudding also manage to find a little gap between the socks
Save them all for those "Oh god I really fancy... ------ .....!" moments & don't wolf them down in the 1st month!
Oh, yes, I hear you say "I was never a great fan of cheese" - but we all say that in the beginning, believe me you will find yourself driving 2 hours through insane traffic just for a decent welsh rarebit, croque monseur - or even cheese toastie!
A cheese slicer would also be useful
You may have gathered it is a bit of a fetish!