I say a good idea would be making a thread for raffles somewhere.
10b for an entry to win a more expensive item (the item is worth 100b+ maybe?)
1b for an entry to win items that are worth less. And this could even be a few items that are worth 1b or a few billion that add up to being worth maybe 20-30b or something? And, we could ask for donations of items worth 1b+ for this raffle. I'm sure that people would donate some items for that.
And I say that each raffle should only be a day or two long, so many raffles are gone though fast.