The first thing one has to do is donate them to the British Museum. That way:
- maximum security can be ensured
- lack of legal implications is definite
- complete disregard for state and international laws can be guaranteed.
Once in the British Museum you can rest easy the Museum officials will do anything in their power to make sure that your artifacts (especially if they are barbarically removed from the original site) will NEVER be returned to their origins in spite of global outcry and demand. Furthermore, the Museum officials will enlist the help of every sarcastic nitwit airhead in the Greater London area in order to further its idiotic cause: holding on to stolen goods.
So if you are a bankrupt criminal not sure what to do with your loot, follow Lord Elgin's example, donate it to the British Museum and get the rightful owners off your back once and for all!!