The simplest way to stack your "acorns" is of course to DCA. There are even flexible strategies to it depending on income level and amount. Some people stagger their DCA by dynamic DCAing. An example of this with $100 if you were paid on a weekly basis would be buying $10 a day for 7 days until your get paid again and reserving the last $30 for a small dip where you can get the most value out of your trade. The best part about DCAing is that it's one of the least wasteful ways to accumulate anything as you are usually getting the best price for the asset over a given time. It's a super simple fool proof way to invest. Other ways that can help are earning some kind of yield that doesn't expose you to leverage or risk your stash of BTC. If someone attempts to do this try to make sure you have custody of your btc if you attempt to deploy it to make it "work" for you. If you must put it in the custody of some other entity in order to deploy it. Do your research and understand the risks. Use collateral or an escrow system.

just my 3 satoshis
cheers