With about 10 million new iPhone 6s ordered in the initial days on the market, a lot of old iPhones are destined for the scrap heap.
Here are some smart -- and cheap -- uses for old iPhones.
Clock. Set your old phone on a dock or a stand and use a clock app.
With Standard Time ($3.99), you will have a timepiece unlike any other.
With this app, your clock is a nonstop time lapse video of construction workers switching out pieces of lumber to shape the actual time.
You can also set up flexible alarms and get the phone to play soothing white noise as you go to sleep. Set it close enough to the bed, and it can be a sleep tracker, too, with an app like SleepBot (free).
Remote control. Televisions, speakers and other devices now have apps that allow users to make their iPhones into sleek remotes.
Surveillance system. Apps can convert an old iPhone that has access to Wi-Fi into a surveillance camera and motion detector. Presence, which is a free app, provides a live stream from the area you want to monitor. You can set it up to record video clips when it detects motion, too.
If you buy a robotic viewing stand for about $100, you can move the camera 360 degrees rather than stick with a stationary view.
Cookbook. No need to go through recipe books or hunt around for other devices when you have a kitchen iPhone. Download a cookbook app, such as My Recipe Book (99 cents) or Big Oven (free), and just leave the device on the kitchen counter. It takes up almost no space and will hold far more recipes than any book.
Extra storage. Need a place to store old photos and music or other files? Turn your old phone into a storage drive using a free app like USB & Wi-Fi Flash Drive.
Voice recorder. Why buy a digital voice recorder when you have a retired iPhone? Using any of several free apps, including Voice Recorder and Voice Record Pro, you will have a designated memo recorder or a device to record interviews and speeches.
Document scanner. Genius Scan and Doc Scan are two free apps that will turn an iPhone into a handy portable scanner that you can use for work, school reports, genealogical research or recording receipts.
Baby monitor. Sure, you can spend $100 or more on a baby monitor, or you can just set your old iPhone up to watch streaming video of your baby as well as hear and even talk to him or her.
Cloud Baby Monitor ($3.99) also allows parents to receive the signal on a wireless network or on Wi-Fi.