Jansen and Dellensen extend the principles of pop-up design beyond retail. Approached in 2009 to design an office for an ad agency that was planning to use the space for only two years, i29 embraced the momentariness of the situation. Instead of shipping in expensive, site-specific decor, they sourced all the furniture locally through charity shops and online auction houses. Jansen refers to the project as their “pop-up office.”  How to Design a Memorable Pop-Up by Luke Hopping