Badges for ID please

[Chacal]

Evening gents

Earlier today I received a package of badges from an old friend including these three which I have been unable to precisely identify:

“MT” patch - this appears to be a WRNS trade badge, but those I see online are ‘tombstone’ shaped, rather than circular?

NAAFI brooch - I remember the NAAFI girls wearing something like this when on duty, is there any significance in the RAF-style bird?

The third looks like a fashion pin trying to imitate a WWII German helmet flash - the fitting on the reverse doesn’t look study enough to go on a uniform.

As always any comments/opinions will be greatly appreciated and will help me to decide if these should go in the swap or scrap boxes

Thanks for looking

Graham