I modified the original Flashlight Holder Clip as follows:

• For Voltax flashlight (really good, $2 from Dollarama)
• Larger back plate allows for epoxy to be used.
• Back plate same size as ring width for rotated printing and maybe stronger filament grain.
• Added percentage to be used for ring gap.
• Cut away the sharp opening a bit.

Printed with PLA
50% infill
on Ultimaker

Install to a surface with 2 part epoxy. Double sided tape does not seem strong enough to do the job, it always feel off from the weight of the flashlight.