This Danish company makes drawers that fit into stairs. Without a translator, I’m not sure if they are a kit or custom installs, but either way it’s a solution to a common storage problem; what do you do with that little bit of space underneath the bottom...
This bed frame from IKEA allows the mattress to pivot up and reveal a secret storage area underneath. It makes good use of wasted space, but this concept could be used to custom build a much stronger secure area below your bed. Or I guess you could just get a Bed...
This iPhone case, available on Amazon, includes a mirror and secret fold-out compartment on the back for concealing cards and cash on the go. It’s a bit bulkier than most cases, but using this would mean you would only need to keep track of one item when...