Honestly bitcoin is the best thing to invest in at the moment. It's quite low and stable at the moment, and it's only a matter of time before there's newfound interest.
For me bitcoin is first and best choice investment for long time (more than 5 years). Besides bitcoin i also save some altcoin like etherium, monero, dash and doge. The precentage is 70% for bitcoin and 30% for altcoin.