What is the riskiest or most unconventional action you have taken in order to purchase Bitcoin during its early stages, despite the lack of guarantees or promises that it would appreciate in value?
Do you mean d unconventional decisions that were made to buy Bitcoin in the early stages or when the price is fair enough to buy?
If it is in the early stages, you might not have good many answers in this topic, because the majority of the early adopters are no longer active in the discussion about Bitcoin.
But I do not think that those early adopters spent too much in buying Bitcoins, most of them were developers who earned bitcoinby minning. What they only lost was the electrical power and the computer that was used that time whose capacity was not even much. So they did not sacrifice much, rather commitment and confidence in bitcoin.