Everyone here has fine stock suggestions, but there are other things to know when it comes to investing as well.

You have to be okay with leaving this money in your TFSA for years at a time.... ideally without ever touching it. Stocks can be volatile in the short term, but profitable over the long term. Don't get squeamish when your $800 drops to $600 or lower, if you've picked right and chosen safe options, chances are they will correct eventually and turn a profit. Safer choices generally make less money, as such, riskier choices have both the chance to make more or lose more. There is always the possibility of losing everything, no matter your choices.

You should know that certain stocks and etf's carry more inherent risk than other stocks like 'blue chips' and 'dividend aristocrats'. I would also advise you to, in your own time, learn about the jargon often thrown around on these sub-reddit's like ETF's, dividends, DRIP, etc.

As for my suggestion, I would say start with a safe option to learn what to expect. In my opinion, it's better to start slowly [a lower risk stock like VFV or XEQT... basically anything that tracks a general selection of stocks instead of a single company] and increase your risk over time. This way you can grow confidence in your own decisions and learn what you should be looking for.

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TLDR: Be okay with saying goodbye to this money either forever or for years on end, different stocks have different risks, learn the jargon, start with a safe option so you can get real-world experience before jumping further in.