I took the train from Dhaka to Srimongol last Saturday. I saw these from my window:
My train was called "Parabat Express":

Man walking cows to the field:

Farmers transplanting rice seedlings; harvest in Aghrahayan:

Typical river scene:

Tea garden:

Decorated gate for a village wedding:

Flags supporting world cup soccer:

An Uros party (celebrating the death anniversary of a local saint):

Boats of Bedey people (who live their lives on boats):

Man building a temporary home:

Fishing net being dried in the sun:

Helping get water out of a boat:

Mother and daughter at a train station in the (hot) noonday sun:

Train going the opposite direction:

People on the roof:

Girl on tracks:

Note: this was a First Class seat. A/C Class windows are fixed shut and will not offer these views. Trip was 4.5 hours.