Q. One brings his Arba’a Minim (Lulav – Etrog etc.) to shul and then goes to a friends house for the seuda. Must he leave them there or can he take them home?
 
A. Horav Dovid Pam Shlit’a maintains that if they will not be used on that day anymore for a friend etc., he should leave them there an pick them next day, since one should not prepare from one day Yom Tov for the next.

Rabbi A. Bartfeld as revised by, Horav Dovid Pam, Horav Aharon Miller, Horav Chanoch Ehrentreu and Horav Kalman Ochs Shlit’a