When shopping garage sales or thrift stores, always look at other ways to use items. At my thrift store, I buy a lot of sales materials so that I can reuse the binder. They are usually bigger and more durable then the school binders. I throw the sales materials away or use it for scrap paper.
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When you know that your have received junk mail offers, look inside the envelopes. Save those plastic promotional credit cards and similar plastic membership card offers from company introductory offers. Do not use the credit card offers or membership offers.