Sooner than most parents expect. Play does not start when a baby can finally grab a rattle — it starts in the first weeks, as looking and listening. What changes over the first year is what “playing” means. Here is the stage-by-stage timeline.

Newborn (0–1 month): play is looking and listening

A newborn’s version of play is sensory: fixing on your face, reacting to voices, staring at bold patterns held close. Toys matter less than people at this stage, but high-contrast images placed 8–12 inches away genuinely get used.

1–3 months: the first accidental swings

Arms start moving with more purpose, hands open, and swipes begin — usually missing, occasionally connecting. A toy that reacts to being hit (a hanging gym toy) turns accident into discovery.

3–6 months: play gets interactive

This is when “playing with toys” becomes unmistakable: reaching on purpose, grabbing, bringing everything to the mouth, shaking what rattles, and rolling toward what interests them. If you are asking when to buy “real” toys, the answer is here.

6–12 months: play with a plan

Sitting frees both hands; crawling frees the whole body. Babies bang, drop, fill, dump, hide, and find — cause and effect and object permanence become the main games. Play is now self-directed for long stretches.

12–24 months: play with a story

Walking, stacking, sorting, scribbling, and pretending — play becomes constructive and narrative. A single toy serves as prop, tool, and experiment all at once.

The short answer

Babies play with toys from birth — but the kind of play changes roughly at 3 months, 6 months, and 12 months. Match the toy to the stage rather than the calendar age, and “when do we start” becomes “what fits this week.”

For the toy maps behind each stage, see toys for newborns, toys for 0–3 month olds, and toys for 3–6 month olds.