Your guests are most likely to toss them away. If you really wish to give something useful as party favors, then you should probably think about edible favors. This way you can be assured that your guests make very good use of them as soon as they go home.
How to Make Edible Birthday Party Favors at Home
Edible birthday favors are very inexpensive and often easier to make yourself. These are just perfect as kids' party favors. If you make them in attractive shapes and bright colors, little ones are bound to love them. In case, you are unable to find time to make your own goodies, you can buy ready-made stuff and then decorate it at home.