https://for-bitcoin.com/calculator/
Bitcoin Savings Calculator is a cool tool for helping you work out how much you could have theoretically made with an investment of $X per week/month in Bitcoin.
I feel that tools like this are great for increasing the awareness of Bitcoin and cryptos because it's kind of like 'Damn, if I had bought just 6 months ago I could have doubled my money also!' rather than feeling that Crypto was only worth getting into back in 2011.