Them that aren't happy living outside in good old zone #5.
Grow an Avocado Tree from the pit (for a houseplant, it probably won't produce fruit). After drying, the pit is suspended in a glass of water and once there is root growth of about 2″, it can be planted in a pot of soil and tended to as a houseplant. If your climate allows, you can plant this outdoors.
Decorating With Plants – The Beauty and Benefits of Houseplants
Grow Bananas Indoors
How To Grow Bananas Indoors
Worksheets: Plant Life Cycle Flash Cards
"8 Great Ways to Kill a Houseplant" ~ Been there done that.....:(
Packaged Flower Bulbs. Materials: One paper-white Narcissus bulb, One 3"-4" terra cotta pot with matching saucer, 38" of 5/8"-wide satin ribbon, One fresh or silk paper-white flower. The varieties Ziva and Galilee are the most reliable. Place bulb in the terra cotta pot and cover with the saucer turned upside-down. As though you are wrapping a package, use the ribbon to tie the pot and saucer together, finishing with a bow on top. Slip a fresh or silk flower under the bow.
Packaged Flower Bulbs -- Gift Idea