Web nerds can have a strange sense of humor, especially late at night. Their attention spans and senses of creativity are so shot from spending hours on end in front of screens that a good gag might actually work on them.
If you're trying to save a little cash, you could get them Fart By Mail. It's exactly what it sounds like--the fart smells come in an either a clear, airtight polyethylene envelope or a brown one for stealth. There's a greeting card inside that makes sound effects.You can even customize the message. When was the last time your loved one got something personalized in the mail? Hm, never.
$9, Fart By Mail