Donate and Pay Membership
You can add a donation to your membership fee by adding the two together (e.g. $20 Membership + $80 Donation = $100) and either entering that amount on the cheque or on the online payment method.
Set up a Reccuring Payment
You can set up your membership (and donation) to be recurring using the online method of payment. Membership comes to $2.02/month (Paypal fees included). For $5/month you will become a member and get a charitable tax receipt at the end of the year.