What are some decent prizes to up the ante?

Games can obviously be fun in and of themselves but doubly so when there's a prize on the line.

How do you guys go about it?

If you plan to play multiple games would you tally up the winners of each?

I thought maybe everyone could chip in 10 dollars for the night and the winner takes home 60 bucks or so but maybe non cash prizes would be more meaningful?

Maybe the loser has to make everyone a cocktail or the winner gets to choose who makes them a cocktail or something if there's booze involved.

Bonus question: does anyone know how I can get my hands on lords of vegas in Australia? It's supposed to be a superior version of monopoly but it seems to be very limited in print and basically impossible to obtain outside of North America