They are typically made from cotton or other soft yarns. Listings often describe them as hand-crocheted or otherwise yarn-based.
Virtually none. They don’t require watering, won’t wilt or fade, and are often recommended for people with allergies.
They’re commonly given as heartfelt gifts for occasions such as Valentine’s Day, Mother’s Day, anniversaries, birthdays, graduations and housewarmings.
They’re used as home and office decor accents to brighten desks, shelves, nightstands and other small surfaces, including office workspaces.
Look for listing terms like "handmade," "hand-crocheted," or "100% hand-knitted," and for mentions of soft cotton yarn or similar materials that indicate handcrafting.