It all depends on your ideas: the sky is the limit. Which solution is best suited for you and your window ultimately comes down to your personal taste. The following two questions might help you find the right product:
Which main technical function does the system need to fulfil? Regulation of incident (sun) light, privacy protection from the outside to the inside, or only a visual function. In which room will the window decoration be installed, and how big is the window in question? Bedrooms can be dark around noon, while office space requires ideal lighting to ensure an effortless view of the monitor. In the bathroom, you will want to protect your privacy and allow enough light to enter. Life takes place in kitchens and kids’ playrooms, which need to host everyday family life, while window decorations in living room normally also make a style statement and shape the ambiance.
For initial inspiration, have a browse around or examples and design landscapes.