let your stamps take you further the second time.

Help others before tossing your opened mail in the recycling bin. You’ve removed yourself from bulk-mail lists and you recycle your junk mail – now take it one step further by sending the cancelled postage stamps from your mail to be reused. Before tossing opened envelopes into the recycling, cut off the used stamp. Organizations who collect cancelled stamps sell them to collectors around the world, then use the money to aid their cause. One such organization is the Royal National Institute of the Blind in the UK. Read more here.

Thanks to Patti Deckett for suggesting this tip!