Disposable tea filter bags are convenient for self-preparation of tea bag and its reservation.
This self-preparation of tea bag can allows us to arrange the amount of loose leaf tea corresponding to our preference and to throw it away easily after brewing. On the other hand, preparing the filter bag every time before brewing is somehow tedious for me. Thus, I often make the self-prepared tea bags a lot and reserve them in a refrigerator using a small box with lid as shown below.
This reservation can allows us to reduce the time for tea preparation. All we need to do for tea preparation is just steeping.
Please try it!