Mother's Day doesn't have to be complicated. Flowers are always appreciated and seasonally appropriate. And if you want to splurge, mom won't mind a spa day, even if it becomes an annual tradition. Of course massages or marigolds are not the most original gifts, so you might be tempted to think outside the box. Creative, however, does not always mean thoughtful, as these bizarre and somewhat passive aggressive gifts prove. Here are 10 gifts not to send mom this Sunday.