Try vegetarian and fish.
Make a good amount of sauce with chopped onions, garlic and either tinned tomatoes or fresh chopped cherry tomatoes.  Fry the onions and garlic in a mix of unsalted butter and olive oil (oil in frst so that the butter does not burn).  Add desired curry paste or your own blend of spice and mix through.  Add chicken stock or beef stock and simmer until it thickens.
For the vegetables try 
Okra (cut off the stem but do not open the fruit body); 
Peppers (blow torch till black, put in a poly bag to sweat, remove from bag and rub skin off with a kitchen towel) remove seeds and chop or slice. (This alters the taste and makes the peppers much sweeter and oilier) ; 
Aubergine - slice, drizzle with olive oil or melted unsalted butter and roast on a griddle over a high heat until they blacken and start to caramelise;
Potatoes - par-boil, slice or chop and fry in olive oil and unsalted butter;
Butternut squash - half, remove seeds, drizzle with olive oil and roast.  Then slice or chop and remove skin; 
Turnips/swedes - treat same as potatoes;
Fresh Spinach. 
I have smaller two handled open pans (like small Woks) so I divide the sauce between the pans and cook the vegetables I am having in individual pans so that I can adjust the thickness of the sauce  to suit the main ingredient.  This also means you retain the individual flavours. Don't cover anything other than the Spinach which needs to steam.
 
For fish I prefer a good sized Salmon fillet, skin removed.  Add the fish to a pan with sufficient sauce.  Cooks in a few minutes.  Alternatively use Cod, particularly Salt Cod suitably steeped in water for a few days (change the water frequently to remove the salt) as it has a different flavour and texture from fresh Cod.  Monk tails also very good.  Ling and salt Ling if you can get it works well.
Rather than rice try Chappati or Paratha and use your fingers with the breads rather than a fork.  You can buy these or make your own, its not that difficult.  You can also make a very decent filler with Chick Peas.  Curry also goes well on a bed of pasta, tagliatelli or any of the flat noodles are better that spaghetti.  Try Couscous, the coarser stuff rather than the medium or fine.  
If you like particularly hot curry add one drip of 'Da Bomb - Beyond Insanity'' (and only one drip) to the main batch of the sauce; its 116,700 Scoville Units!  (Not for children; wear disposable gloves or wash your hands immediately after handling the bottle just in case any gets on the skin and is inadvertently transferred to delicate places!)  I get mine at Harvey Nics, its about a fiver a bottle and a bottle will last for a few years.  One opened best to keep the bottle in the fridge.