If you don't want to receive any gifts for your anniversary, here are some sample texts of how to phrase your request.
It is appropriate to include a note requesting no gifts at the bottom left or right of the invitation. Have the note in a smaller font size than the rest of the invitation.
No gifts please. Your presence with us on this special day will be our cherished gift.
Your love and friendship is the only gift we need or desire. However, if you wish to bring something, please make it an item of food that will be donated to the needy.
The couple requests no gifts.
No gifts requested.
In lieu of gifts, you may make a donation to ____ (list some favorite charities.)
The family asks that no gifts be given.