What foods can i freeze?

You can pretty much freeze anything , just try to get all the air out of package as much as possible..Personally i don't like dumplings after freezing..but you can cut up flour tortillas and throw them in after it is heated and they taste so much like dumplings you will be surprised..Your grandfather can heat up the meal and once hot add the tortillas..We cut ours in two inch strips..It takes about 3 minutes for them to be like dumplings..Your Grandpa sure is lucky to have a granddaughter like you.