You might want to consider mutual funds, or even time deposit if you're looking for safer alternative investment opportunities.. still better than letting your money sit in a bank.
There are lots of alternative investments aside from bitcoin but it will depend on how far can you go with regards to trust and risk issues. Investment if not manage well or if done in the wrong place would mean loss of money. For me I would go investing in real estate or land investment since it increases its value as time goes by.