best plates for sraddha for food to gods and pitrus - from vayu purana

 66. Mud-pots, vessels made of the leaves or wood of the Udumbara {ficus glomerate) tree, its fruits and Samits, all these are considered very holy in Sraddha. They are very pure.

The following trees are equally sacrifice-worthy : Palasa (Bd. P.), Plak$a, Nyagrodha, Asvattha, Vikankata, Uduihbara, Bilva and Candana

The Aloe wood is to be desired by all. It has the same benefit as that of a horse-sacrifice.