Chosen Reward: Magical Regain
Regain Details: After seeing Papyrus get his phone back, Sans would like his, too. It works the same way as Papyrus's cell phone, with texting, photos, apps that won't work here because they are nowhere near the Undernet's wifi range (though maybe some of the games like monster flappy bird will work, but nothing actually useful), and the dimensional box access which makes it magical.
Coin: Activity Rewards