Sandwiches are items that don't freeze particularly well. There will be some water loss from the ham and/or cheese and that will make the bread very soggy when thawed. Also the cheese will get a funny texture (as will the ham) from the water loss.
Soups, stews, and chili are items that freeze well. If you're inclined to cook a big pot once in a while and then freeze in small containers, that's an easy light meal with little fuss. You can microwave as needed, or leave in the fridge to defrost in the morning or night before.
I hope this helps.
Pat Baird, MA, RD, registered dietitian