One colleague of mine shared with me how he and his wife celebrate their monthsaries. It's interesting to learn that they usually spend their monthsary the night before that special day. They unwind and bond together the night before and wait for the 12 midnight to strike and greet each other with warm hugs and kisses. Since they're newly married, they plan to celebrate their wedding anniversaries that way and as for their third wedding anniversary they plan to go on a vacation abroad. Probably by that time, they were already in Canada.
They usually don't give presents during their monthsaries but will be giving anniversary gifts by year. Everything is planned in advance. And I think for me, the best gift would be an offspring. They should be considering that in their plans.