The Portable Door Lock - Splurge

Anyone who's ever stayed in a sketchy hotel, motel, or hostel will appreciate some added safety. Taking up less space than a normal combination lock, these portable door locks attach to just about any door frame without tools and will help prevent an unwelcome guest from busting in to your room.

Splurge: Add-A-Lock

Price: $20

Why We Like it: The Add-A-Lock is extremely easy to install once you've watched the instructional video, which features a child to show you just how easy it is to do. The lock feels well made, helping to give you a sense of security in an unfamiliar hotel room. A word of warning: Pack the lock in your checked bag, as the Add-A-Lock set off an airport security scan, which resulted in a tester's carry-on getting hand-searched.

Where to Buy: AddALock.com, Amazon