The Schottenstein Interlinear Siddur (both the Sabbath / Festival and Weekday volumes) plus the Interlinear Tehillim in one elegant, conveniently sized boxed set.
It's in the size that's perfect for travel, desk-side, and general use - and, of course, for a gift that will be much appreciated and long used.
This Interlinear Series is so useful and popular that people have only one problem with it: Where was it many years ago? Good question. But now that it's here, let it bring new meaning and satisfaction to your prayers - or the prayers of someone on your gift list.