Remember that old DVD player you shoved in the attic, or the stack of DVDs you swore you'd never watch again? You might want to think twice before you toss them for good. There are collectors, tinkerers, and anyone who's looking for spare parts who would pay good money to get their hands on some old gadgets. You can also think about repurposing old tech into something genuinely useful, saving you from both losing money and having regrets later on. Before you let go of your next gadget, it's worth asking yourself if you're throwing away something you might later regret.