lastminute.com (currently for sale if press reports are to be believed) is offering a £20 carrot to persuade you to download its smartphone app.
Download the app from your local app store and book any hotel for £100 or more. At check-out, use voucher code LMNAPP20. £20 will be deducted from the total cost.
Before you ask …. I have tried using the code on the desktop lastminute.com website and it does not work. However, nothing stops you using a desktop to research what hotels lastminute has to offer before turning to the app to book.
It is valid for bookings until Christmas Eve for stays which must be completed by January 31st.