Originally Posted by knc1
Knitting needles are often metallic with smoothly round ends. (Kpw)
You can get those in various sizes and for free from grandma's sewing supplies if she isn't watching.
The smoothly rounded end of the (artist's) paint brush handle is a good substitute for a hand-crafted chopstick. (K5)
The O.P. already has one of those in their hand, they only have to turn it end-for-end.
The blunt end of a knitting needle or an artist's paint brush handle are about the same diameter as the narrow end of chopsticks, which I found was not wide enough for the K5 IR touchscreen. Only the fat end worked, and only when held perpendicular to the screen surface.