I just discovered this in the Nespresso app last night - sign up as a new user with an alternative email address to unlock the free gift option. Then proceed to order the £76 pack of Selection Discovery - 250 Capsules
and you will have the free dispenser in your basket! Easy!
The dispenser retails for as much as £64 on Amazon: https://www.amazon.co.uk/Nespresso-Versilo-Capsule-dispenser/dp/B00T6H5KZ8
The app teases existing members with the Versilo Dispenser priced at £0 which you can be added to the basket - however its magically removed at checkout.
So just sign up as your partner or friend and voila - free gift...