There are a ton of projects ready to take your bitcoin for funding. You can check out cyberfund for some projects currently fundraising. This will involve a lot of research and still no guarantees that it will be profitable. For lower risk investments with much lower rewards you can look into lending: for example Margin Funding on Bitfinex or Coin Mixing with JoinMarket.
There are these days a lot of websites(company's and start-ups) that are asking for investors so there is indeed a lot of thing you can pick from.
The only thing you need to keep in mind to always do it at a trusted party.