This works:
Garlic, ginger, a smidge of deseeded chopped chilli, handful of spring onion/white cabbage/leek (any will do), salt, pepper, lime juice, peeled prawns. You can also add minced pork, or some white fish, or some minced chicken as well to increase the volume.
Mince the lot together in the blender until you have a rough paste – then take ping-pong ball sized lumps and shape into little burgers. Dust each with flour, then fry in hot oil until crisp either side.
You can have soy/chilli sauce/spicy mayo on the side, and junior will love them, plus you’ve got some veg into the nipper by stealth. Also – keep the heads and shells for making stock. Lovely.