Here is a rather thoughtful cover from sent from Dresden, Germany, although I admittedly do not know the sender personally since I received this as part of a circuit. I say it is thoughtful because it has three of the four greetings stamps issued by Germany (two were issued 7 Feb and the other two on 8 May) for its contribution to the Europa CEPT series, which this year has the theme of letter writing. According to the Desutshe Post website, these stamps wre issued because they express the true purpose of writing a [personal] letter, which is that of greeting the recipient.
In this case, the sender greets me "Danke = Thanks," "Alles Gute! = Wishing you well!," and "Herzliche Grüße = Cordial Greetings." I wish the same for you too, sender.
As for the cheerful designs, they are those of American pop art artist James Rizzi.