Also, fun thing to know for years to come:
- Main carb: tacos, pasta, couscous, rice, potatoes, bread base, pita, (puff) pastry, etc.
- Main proteine: Fish, chicken, beef, etc, salmon (very healthy but very expensive where I live), tofu, cheese and nuts, egg and bacon. (For vegetarion options it can be a bit low on proteine so you'd want to add a side of yoghurt or something else)
- Any vegetables that go well with your chosen combo. Be careful that you don't get things too wet if you use a vegetable that has a lot of liquid in it.
- taste makers: if you want to add a sauce, spices, extra cheese, etc.
There are millions of foods out there, I think it's great that you're willing to experiment a bit. I'm sure there'll be lots of things you like. Keep an open mind, but if you don't like anything don't force it, there's plenty of other options after all.
I've listed some other ideas here already recently.
https://chalkbucket.com/threads/will-gaining-weight-help.70695/#post-639493
As for proteine specifically: meat, dairy, peanut butter, or nuts in general are great sources of proteine. You can do lots with them like
- oat meal peanut butter snack
- smoothie with fruit and yoghurt and maybe proteine powder or peanut butter
- trail mix
- proteine waffles or pankakes (made with dairy products like cottage cheese, or dairy products)
- chocolate milk
- milkshake (just ice cream, milk and a blender. add proteine powder or peanut butter or fruit if you want)
- proteine bars
I can keep listing ideas, but it really depends how much work you want to put in and what kind of foods you like.
The least effort is probably fruit-nuts-dairy combos, bananas, cheese, or bread with peanut butter (normal in my country but I dont expect it's a normal thing where you're at).