Help with loop recommendations

Both myself & my mother are hard of hearing (double hearing aids for both of us with t-loop setting).

I’ve been trying to find a device for my mother that I’m not sure exists yet so hoping someone can tell me if it does & if so where I can get it, & if not any other recommendations.

Basically if we’re out to dinner, etc with family we both of us find it difficult to hear the conversations with lots of people there & lots of background noise. I’m trying to find a t-loop device that doesn’t require the restaurant/pub to have a loop system in place (a lot of them don’t) & is battery powered - basically a battery powered microphone that would sit on the table & would funnel conversations to our T loop setting on our hearing aids with out the need for special necklaces, power sources, etc.

I have found several ‘portable’ loop systems like the PL20, but the that are battery powered, no necklaces but the microphone section is still quite large (Height: 25cm; Width: 27.5cm; Depth: 11cm) & wouldn’t really be suitable for a restaurant setting.

Are there any portable, battery operated loop systems out there that would be suitable for a restaurant setting? Or can someone recommend any other options?

Whatever we get needs to be very easy to carry, set up & use as my mum is quite elderly & not really good with tech - gets confused if there are lots of bits/steps to get something to work. That’s why we want something where we just turn on the microphone & switch her hearing aids to T without having to fiddle with necklace loops & things.

Any ideas very gratefully received