Punch a hole in the corner, and tie to goodie bags with a piece of orange curly ribbon.  I have used this idea for 4 years, and each year I received at least one or two calls - 3 of those years brought me new registrations!

Remember to include your phone number!

Briefly describe the type of care you provide and a description of your program on the back side of the coupon, along with the discount or $$ off information upon registration.  You can use a percentage off, or a dollar figure.

Make sure to add your limitations on the coupon, for example.  Expiry date; Maximum discount allowed; Discount will apply on your third month of full time registration - whatever you decide!