I'm not here to judge anyone for living in a trailer, I've seen some very nice arrangements in my time. But I am here to say let's not get all habitrail on our homes now, okay?
Etsy merchant Stella Bleu Designs uses vintage looking pipes to create beautiful looking bookshelves. Perfect for a steampunk home (preferably with lots of studs).
The Hungarian Forint is used in very large quantities ($1 USD = 218 Ft) so the government recycles a few tons of it every year. After shredding it and bundling it into bricks, the currency is shipped to charitable organizations to help with their heating cost.