1,5$ is really a short amount.... and make it 150$ in 1 year seems to me really difficult. (that's x 100, so... 10000% return on investment?)
AFAIC I would  try 2 eventual strategies :
1-  like someone said buy an apple (assuming the 1.5$ is already in the exchange), that's to say 1 unit of an alt which actual rate is between 1 and 1.5$ and wait the rate makes x2 (so +100%), sell, then wait to buy it again when it's low enough, or buy 4 units of an other kind of apple, or a peer, then wait a + 100%...
2- Or buy a bunch of srawberries or cherries for a few cents each unit (from 0.01 to 0.2) , with low caps, and whom projects, tech. features or whatever seems to have an interesting future application, or brings something new to the blockchain ecosystem (keeping in mind that like 90% of the currencies here, it's only mental projections and presumptions on what MIGHT or COULD be their future applications... so it's a gamble). Then hodl, or buy a bigger bunch of another promising one if you make some profit. And never sell in a panic movement, but only when you make profit, even if it's only 2 or 3%.

I would chose the 2d approach, but for a real experiment,  I would simultaneously try the 2 paths  to see which is the more efficient. And I don't think it can make x100 in one year, but maybe x10? But in crypto world, who knows...

So maybe 1.5$ on the first option, 1.5$ on the 2d one. To be honest, I would throw at least 10 or 20 bucks at it, to be a little more comfortable with the alts I pick up and diversify a little...