I always make my own envelopes to hold my rent checks. I usually use old magazine pages with interesting advertising photos or recipes and pretty food. My landlord has complimented them a few times. I'm about to walk this month's rent check down to his house in the envelope I made from scrap paper I practiced using my Spirograph set on.
Make paying this month's bills more fun with this envelope template or make your own template by taking apart a used envelope.