Here’s another one of those ideas that’s awesome, but pisses you off because clearly you should’ve thought of it first. The Stayhold ($13) is simply a solid plastic wall with velcro hook strips. As we all know, when your trunk is free of dead bodies, it can be tough to keep a bag of groceries in place. But with the Stayhold you can back that thang up (still talking about the Stayhold here–that would’ve been a really weird segue if we were now discussing your ass) and keep your stuff in place. Plus it comes from Dublin, so I imagine it’s really good at holding a pint in place.