Sadde knocks on Isabella's door at 7PM sharp.
"Pet, I don't have the coordination for anything sharp, at least not until you're very good at self-healing. If I trip while I'm holding my cane you might get bruised, if I trip while I'm holding that..."
She shrugs. "I'm mostly curious, I hadn't actually considered it before and it's an idea, but of course we won't do anything you don't want us to."
Kiss. "Not today. And I already have a vibrator, which I think you remember... hmm..." She winds up buying a strap-on and a set of four lengths of nice silky too-flat-to-be-quite-rope which can double as a blindfold if desired. The silky stuff is expensive enough that this is all she gets.
Sadde's mind was naturally already in the gutter, but Isabella having actually bought things somehow makes it even worse, and her eyes are drawn to them every now and then.
"What are you thinking, pet?" asks Isabella in a low voice.
"I'm thinking about the things I want you to do to me. I'm thinking in particular about what we bought today."
"I didn't check the menu this morning. Just give me a deadline or I might lose track of time and you'll be showing up to work hungry."
And unpackages the silky lengths of fabric and ties Sadde's wrists together behind her back with one. And puts the other over her pet's eyes.
They have until one-thirty.
And since Sadde's blindfolded there will have to be more verbal instructions and physical hauling to get her where Isabella wants her, and doing what Isabella wants her doing.
And Sadde is more than happy to oblige, reacting to every word and touch like electricity coursing through her body.
...but she doesn't want to cut it too close, so she still leaves herself plenty of time to try on her new item and demonstrate its use to her sub.
Even more electricity! And noises. Lots of those, with varying levels of coherency. Sadde really likes the new item.
Oh good. Isabella likes that she likes it. Also, it leaves her hands and mouth free to surprise her blindfolded pet.