You could expand on the eshop goodies and include...
NightSky which got a 10/10 at NintendoLife ($10)
Colors! 3D 9/10 ($7)
The Denpa Men: They Came By Wave 9/10 ($10)
Mighty Switch Force! 9/10 ($6)
and the sequel to Pullblox/Pushmo that is coming out soon Fallblox/Crashmo (I believe in USA).