I have plenty of small cross body bags, which are often too small for a day out of the house, and lovely leather totes, which are too big for everyday when I don't need to take a laptop etc..
I usually end up with a cross body plus a canvas tote for the extra bits, but what I'd love is a medium sized bag with enough room for the essentials plus a book and small water bottle but not too bulky or slouchy
Preferably leather or suede. Ideally a shoulder strap. No budget restrictions, all inspiration is welcome!