Since you do not want to spend too much money, this rules out any third party smart, Bluetooth stylii.
The only smart Bluetooth stylii I usually recommend has been out of stock everywhere since the beginning of Jan. 2020.
No other stylii will have and pressure sensitivity for drawing light to dark/thick to thin lines and no hand/palm rejection.
The only stylii you can use with your iPad Air 2 is either a cheap, cheap commonplace, purchase anywhere capacitive stylus.
Preferably it is better to use a clear, disc tipped capacitive stylus which is more accurate for drawing and writing.
Another type of stylus is a battery powered, fine point/tipped, so-called “Active” capacitive stylus.
These are finer tipped stylus that use a battery to generate a small electrical signal/pulses to the tablet screen the same way a cheap capacitive stylus transfer your finger elecectrical impulses through the aluminum stylus body to the capacitive tip to the tablet’s screen.
These “active” types of stylii can vary in quality and accuracy in how they write or draw, but do not need any type of Bluetooth connection to work. Again no pressure sensing to light to dark/thin to thick lines and no palm rejection.
Just turn the stylus on and start writing and drawing.
Both types of capacitive stylii can be easily found on Amazon.
So, you can lay your hand on the screen while drawing and create a barrier for your hand’s electrical impulses, you can purchase and use special, non-electrical conducting, lycra-based material drawing glove that works by isolating your hand/palm and allow you to lay your hand/palm on the screen as you draw or write..
Something like this found on Amazon.
https://www.amazon.com/Professional-Anti-fouling-Drawing-Tablet-Graphic-Right-Ha nd-Left-Hand/dp/B017R8M2JY/ref=sr_1_1_sspa?ie=UTF8&qid=1543548123&sr=8-1- spons&k eywords=lycra+drawing+gloves&psc=1
Many more makers of these types of gloves found on Amazon and in different hand sizes, as well!
Best of Luck to You!
