Audio, I use a voice recorder and keep it in a small embroided bag that hangs on a long shoulder string. Luckily I look like a past my prime hippy to most people anyway so it works for me. It's my hair folks. Out of control curls since I was born. If seated I just set it on a table.
And a warning about using a bra to hold anything. Please try it first if you are someone who has enough to fill that cup as you will find that bending and twisting pushes buttons on your device.