What to do with dried red lentils?

Hey r/budgetfood, it's getting to the end of my school year and I want to use up the ingredients that I have rather than go grocery shopping. I have a bag full of dried red lentils, and am wondering what I can do with them based on the ingredients I have (tons of pasta, white rice, vegetables, tomato paste, the usual spices, vegetable broth, etc. etc. etc. basically I have a well-stocked kitchen). I was thinking maybe a soup, or lentils and rice? Note, I am a vegetarian.

Any advice you can give me would be awesome!