Can I trade my old MacBook and iPhone for a new iPhone?

I have a question trying to figure out I know how to trade the phone in for a phone but… can we trade a laptop for a phone as well or does it only work for laptops? What I’m getting at is my wife as a laptop she isn’t using because I have gave her mine for Christmas I was thinking about trading in my phone for the trade value and to add on with it I was thinking about putting her laptop for a trade as well for the phone is that possible?

[Re-Titled by Moderator]