Secure hard drive disposal

Watch on YouTube

I don't think anyone will be retrieving the data from these now.

Shredding your browser history

Watch on YouTube

There may be times when simply deleting the data isn't good enough. If that's the situation you're in then there are options. Thermite is my favourite but it can be a bit messy and smelly and not really an indoor sort of thing. An industrial shredder like this (which actually seems custom made for hard drives) would be the next best option.