1) The one on the upper left is a solo vibrator scene w/Meredith. Start by going to the arcade and talking to the Fortune Teller. Tell him "I wish it were Christmas." Then go to the front of your house and you'll have a new "Seasonal" button available in the menu and a few short quests.
2) Go to the kitchen in the Morning when Meredith is there. Click on her to give her a hug and then explore her dialogue tree.
3. The one on the bottom is supposed to be a super secret easter egg. Go to the kitchen at night and drink the whiskey on the shelf 3 times (or 4 I don't remember) after you've completed the Kissing scene w/Meredith.