Erasing devices before recycling

I've hit one of those expensive periods where multiple devices need to be replaced, which also means multiple devices need to be recycled or resold. When you're in that position, how far do you take wiping the old data off before you send off your device? Do you: 

• Drill and microwave the devices like in Mr. Robot?
• Just do a factory reset of the device and call it a day?
• Somewhere in-between?