I’m currently growing the following, relatively easy, carnivorous plants indoors in a sunny window.

Drosera capensis, Cape Sundew, shown here growing as seedlings in a terrarium in a live mat of sphagnum moss in a south-facing window:

D. capensis is an easy sundew because it has no dormancy requirements and does well year-round in a sunny window. Its attractive leaves are quite animated, curling themselves around prey. It’s also very willing to bloom with sprays of small, purple flowers on long stems that self-pollinate and seed themselves around (that was the source of all those plants in the photo above).

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Pinguicula gigantea, a tropical butterwort with no dormancy requirements, is also happy in my south-facing window:

What sets this butterwort apart is its size. A mature plant can be as large a dinner plate. It readily blooms with white or pink flowers.

Nepenthes ventricosa, one of the Asian pitcher plants, is also an easy subject in a south-facing window.

What makes me recommend N. ventricosa is that it’s smaller than many of the other Nepenthes species and so a better subject for small spaces. This plant bloomed for me indoors, another indication that it’s happy as a houseplant.