Cost

• Party favors should not be the most expensive part of the party. They are simply a gesture to say thank you to your fellow guests for coming out to honor the bride to be. No one will mind if you don't spend a lot of money on them.
  
  

Coordination

• Party favors should coordinate with the theme of the party. If you go out to a bar for drinks, think about martini mixers. If you are dressing up crazy and doing a scavenger hunt, favors such as feather boas might be appropriate.
  
  

Gender-Neutrality

• These days many bachelorette parties are attended by members of both sexes. Ensure that the party favor will be appreciated and used by men and women equally.
  
  

Amount

• Ensure that you have enough favors for everyone at the party. You'd hate to pass out the last favor and realize there are still two guests waiting for theirs.
  
  

Decor

• Incorporate the favors into the decor. It is one less decoration you have to purchase, and it will be fun to pass them out at the end of the party.
  
  

Quality

• Make sure that the favor is something that you yourself would like to receive at a party. If you think it's a piece of junk, the other guests will too. You are trying to give them something to remember the party by, not to toss in the nearest trash can.