Boom experienced her first job as both an editor and designer during her time at the Dutch Government Publishing and Printing Office in The Hague. It was here that she was noticed by Ootje Oxenaar, a designer of Dutch banknotes, who invited her to design two catalogues for special edition postage stamps between years 1987–1988. To him, she was the ‘designer of the crazy ads’. The annual Dutch postage stamp books was considered a prestigious opportunity with previous designers had including Wim Crouwel, Karel Martens and Gert Dumbar. Boom's experimental style was evident in this particular publication, through the rich layers of information and imagery. Boom structured the book in a Japanese style binding and had text crossing multiple pages with printed folds and translucent paper. Though well received by Oxenaar, this project drew a lot of public outcry for being overtly experimental in comparison to previous editions. Boom received much hate mail, particularly from stamp collectors. However, this controversy brought her name into the public stage and established her name as a designer.