You can also specify fingerboard material (Maple, rosewood, ebony, pau ferro - only on fretless)
Fretless can have lined or unlined, but on fretted you always have the markers.
On StingRays you can choose either the typical Ray neck, or a Sterling neck.
You also have the EQ choice (2 or 3 band, and 4 band on the Bongo/Big Al/25th/Reflex)
On the 'Classic' series you can specify flamed or birdseye maple, glossed or unfinished neck.
Piezo is only available on single pickup models, except the Bongo.
Most models are offered in 4 or 5 (or even 6) string variants.
There's obviously a pickguard choice as well.
There are many models out there with fancy tops, just have look.