Bowser has gifts for Wendy, Kamek, General Guy, Naval, Peach, Luigi, Watt, Parakarry, Daisy, Yoshi, Lash, Captain Falcon, Samsam, and his SECRET SANTA SPINARAK.
Wendy: A diamond the size of her head. And also a diamond necklace. And also Bowser had Hoboken, New Jersey renamed "Wendyville"
Kamek: A certificate that reads "I will not replace your services with Kammy's for the following year" and a couple bottles of wine. And some crazy old spell scroll thing that Bowser can't make heads or tails of. Have fun.
General Guy: Two bags of peppermints and a gallon of chocolate sauce.
Naval: Two bags of fertilizer and a wide-brimmed straw hat.
Peach: 20 yards of the most delicately dyed pink taffeta.
Luigi: A pair of socks that is actually two boos in disguise. You put them on and then they turn back into ghosts and hopefully make you crap your pants.
Watt: A package of 4 AA batteries that Bowser had Kamek drain all the electricity out of. They are not rechargeable.
Parakarry: Not a gift, per se, just 50 different letters addressed to 50 different parts of the Mushroom kingdom, none of which are anywhere near each other, more than one of which is addressed to figures such as "the lantern ghost who lives in the middle of an impossible to navigate forest" and "the third clubba guard at Tubba's castle" and the like. Letter #51 (to be posted after the holidays) is to Parakarry himself; in it is a picture of Bowser giving him the finger.
Daisy: A
beautiful t-shirt.
Yoshi: A watermelon! When you open it up, on the inside the watermelon has been replaced with soggy newspaper.
Lash: A bom-omb canon, like the kind on airships that shoots them out annoyingly.
Captain Falcon: An anonymous box that has one (1) bee mushroom in it that Bowser had Kamek enchant to not wear off for a week. The mushroom will chase you around your house if you don't touch it when you open it.
Samus: A Copy of "Metroid: Other M" because nothing could possibly be so offensive as that A mug that says "#1 teacher" on it with a note that says "thank you for being such a nice teacher" but with no name. The mug is actually ensorcelled. After a month it turns into… a Faberge egg.
SECRET SANTA Spinarak: A can of bugspray.
[Edit Dec. 26] Doopliss: Doopliss gets a bag of gold coins and a flatscreen TV for playing totally awesome jokes on all of Mario's lame friends.