Upgrade to the usual absolutely useless light source to dramatically improve a cheap otoscope/auroscope
Buy a cheap fibreoptic auroscope/otoscope eg https://www.aliexpress.com/w/wholesale-Mini-Fiber-Optic-Otoscope.html
Buy a cheap Q5 torch eg https://www.aliexpress.com/wholesale?catId=0&SearchText=mini+cree+q5
Remove the head from the auroscope (discard the rest) and the focus lens from the torch (discard this)
Trim the auroscope head so it fits into the torch and get using it...