"The lottery is a tax on people who are bad at math."

Here on average it pays 85c for every $1 put in.

Better idea - you could buy a bitcoin mining rig and "solo mine". Probably will just lose electricity, but you'd be helping to secure the whole blockchain, and if your miner finds the block first you win big!

(You can do this with the computer you have already if you use Xmrig. You'll need to convert XMR back into Bitcoin if you win, but that's no problem)