What to add to Japanese curry?

Hi, i have japanese mild curry blocks, i cook a load of load onions and pre boil some carrots, use a bit of the water the carrots cooked in to hydrate the blocks, then add in a bit or coconut milk and a teaspoon of corn starch

this seem so make a nice sauce, but i am not sure what meat i should use to bring it up a level?

i have small cubes of potato, onions, and chunky carrots in the last one, but no meat.