shaped blinds for angled window?

[muckylittlepaws]

We have some very big windows (so one side of the window is longer than the other and the top slopes triangular shaped). Does anyone have a cost-effective blind ideas. So far we have quotes for vertical blinds and we'll go with that if needs be but I'd like to consider other alternatives first.

Thanks in advance!

[OnePlanOnHouzz]

Standard blind - shaped to fit into the triangle - used upside down on a pulley - so use a string through hole in the point of the triangle . Works well !seen one on action at a friends house.