For years, making ravioli in the spring with a group of lady friends, when the hens started laying in earnest, was a favorite party activity at my house. Everyone would bring their special ravioli cutters and pasta rollers, I’d lay clean sheets out on all the beds so we’d have enough room to let the finished ravioli dry, someone would open a bottle of wine and we’d get to work. We’d make hundreds, then divvy up the spoils at the end of the afternoon. Fine, fun memories! That’s obviously not possible at the moment, however. 
Definitely add semolina to the dough, for texture as much as taste.
Some filling recipes:
Chicken and Spinach
1 c. (4 oz.) ground cooked chicken
fresh spinach*, steamed and chopped with residual moisture squeezed out (about 8 oz. cooked)
3 TB butter, melted
3 TB Parmesan cheese
1/4 tsp salt
nutmeg to taste (about 1/8 tsp)
dash of white pepper
Combine chicken, spinach, and melted butter. Stir in cheese, salt, nutmeg, and pepper. Place 1 teaspoon filling on one 2 inch square of dough. Set aside to dry for 1 hour, turning once.
Cheese and Spinach
1 lg. carton Ricotta (or make your own)
2 bunches spinach
1 handful chopped parsley
1/2-1 cup grated Parmesan cheese
2 egg whites
nutmeg to taste
salt & pepper to taste
Cook spinach*, squeeze out moisture and chop. Chop parsley and add to other ingredients, combining well.
*Pro tip for processing large amounts of spinach as called for in 2 of the above filling recipes: Stuff a large microwave-safe bowl with dry spinach. Nuke for 1-3 minutes. The spinach will be nicely wilted with very little residual moisture.
Ground Beef
½ lb ground beef
3 oz Parmesan cheese
¼ onion
2 - 3 cloves garlic
1 egg
fresh oregano (don’t get carried away), chopped
fresh parsley, chopped
Chop and mince garlic and onion. Grate Parmesan cheese. Brown ground beef and break it up fine. Add in chopped garlic and onion and finish browning beef. Drain browned ground beef, garlic and onion well in a colander. Chop or process fresh oregano and parsley. Add oregano and parsley to browned ground beef, garlic and onion. Stir a lightly beaten egg and Parmesan cheese into mixture.
Have a great time and don’t forget the wine!
ETA: Obviously these are not complex recipes as you requested, but the simple, clean flavors of good, fresh ingredients is what I love. 