Can I successfully make my own coffee (think tea) bags for steeping single cups of coffee?

I have #4 cone coffee filters.
If I put a tablespoon of coffee into the bottom of the cone, tie it off with cotton string, and cut off the excess filter, will I end up with a single-use coffee bag that makes decent coffee?

Any other suggestions?
I’m trying to brew cups of coffee for myself without any additional appliances to buy, store or display.
I boil water in the microwave, brew in a Bodum glass, and I’m currently using Folger’s singles.