So basically, just sit there and stare at it

Warnings on my 2yo's new T-ball set:
(paraphrased a bit for readability)

• adult supervision required
• do not place hands, fingers or face near or on ball or tee
• never place t-ball set on hard surface such as concrete, asphalt, wood, or other hard surfaces
• never place or use t-ball set in or near street, driveways, sidewalks, alleys, patios, hills or garage
• never place or use t-ball set near playground equipment, trees, low branches, wires, clothesline, fences, pools, and parked cars
• do not use product when raining or when ground is wet
• recommend or encourage use of batting helmet to promote safety.

....why you'd need the batting helmet if you are just going to sit inside and stare at it I have no idea.