The only foolproof system I found is to do a full, dress-rehearsal for my overnight recharge in the hotel when I’m finishing up my packing and doing it the right way:

• Gather up all the devices and gadgets that will need recharging. Think it through. Did you remember the Apple Watch that’s on your wrist and the DSLR camera you intended to bring?
• Connect everything that needs to be charged to its charging cable and charger and power supply. For everything you have, there should be a chain with the device at one end and a wall outlet plug on the other
• Great! Now figure out how many power outlets you’re going to need. If it seems like there’ll be a lot, then add a compact power strip or multi-outlet adapter. Some hotels can be very generous with the number of outlets they make available. Some, not so much. 
• Consider any device interconnections you’ll need. Are you syncing your phone with your laptop or downloading photos from your camera to your computer. When I travel, I always make sure I keep copies of everything I create in two separate places.
• If your travels are taking you out of North America, make sure you have enough adapters for the local style of wall outlets [Wikipedia link]. If you need to lug along a device like a CPAP machine that you’ll need in a specific location, make sure you remember to bring a local power adapter for that, too. Pretty much all adapters and chargers are built to handle the range of voltages used by different countries, but if you have any doubts, it’s worth checking with the manufacturer.
• One other thing I do is make sure that I have charging cables for anything I may need to use on the plane in my most accessible carry-on. Sure, it may only be a 90-minute flight, but what if I get delayed in the terminal or on the tarmac for hours?