http://www.ceco.electricuniverse.com/safetyrangers/flash/signup.php – for children within the ComEd and PECO service areas. they send a binder, trading cards, a pencil, and more

Many professional sports teams will send you a fan pack in the mail if you request one.  Here are some email addresses, find your favorite team, and send them an email requesting one and include your address.  There are also a few below that require you to mail in your request.  If you happen to find any others feel free to add them in the comments and I will put them into this post:
fanfeedback@bluejays.mlb.com

Read more

http://www.windowcoverings.org/

https://secure.mlb.com/fla/fan_forum/billy_bunch.jsp -As a Billy’s Bunch members you will receive:A Welcome Letter from Billy The Marlin, 2 FREE Vouchers to attend a 2008 Marlins Home Game, 2008 Player Poster, Baseball Cards, and Marlins Eye black

http://chicago.whitesox.mlb.com/cws/fan_forum/kidsclub.jsp -click sign up now at the bottom. Includes: Official Membership Certificate, Official Welcome Post Card from Manager Ozzie Guillen, Baseball Cards (set of six) featuring current White Sox Players, White Sox Temporary Tattoos, White Sox Kids Club Poster, Two (2) ticket coupons redeemable for Upper Reserved seat tickets to Regular-priced games (excludes Prime, Premier and Sox/Cubs games during the 2008 season)

http://www.yellowstonepark.com/planyourtrip/freetripplannerkit.aspx

http://www.oraldeafed.org/materials/index.html

http://pollyklaasaction.org/campaign/enewsletter_child_safety_kit -thanks krista

http://www.oasiscd.com/ecorequest3/