Buddhist memorial service

When someone holds a memorial service for a family member on the second or subsequent year after the death, what should a friend say or give to mark the occassion? Is there a special expression to use or a special card to give?

In general, Japan.　3,000〜5,000 yen put money into special envelopes instead special card.
The envelope has already been filled with "御仏前" and write your name in the field below.
"御仏前(gobutuzen)" is "Presented in front of the Buddha "means.
The envelopes can be easily purchased at convenience stores.
Very good if you bring a cake or something as the deceased liked fruit.

If you are not Buddhist, you will be permitted without them.
I think the important thing is what to say. There are no rules.
Your friend will be so happy words than anything else.

Usually, anniversary memorial services are held exclusively by family members and relatives. You may be invited if you were a special friend of the diceased. Unless invited, you don't need to care about the ceremony, which is basically a family matter.