Things that we don't like can be awkward and uncomfortable.
1) Having to sleep with left wrist cuffed to right ankle
2) Having to cook a meal with left wrist attached to left nipple (ring or clamp)
3) Walking in public with small sharp stones in her shoes without showing any discomfort
4) Walking in public without panties and with clothes pins clipped to labia
5) Thin cords from her nipples fed down her sleeves so you can give them a tug in public when she deserves it
6) Wearing a short skirt and nothing underneath, she has to bend right down in a public place (edge of sidewalk works!) and reveal herself
7) Not being allowed to wear makeup on one side of her face for a day
8) Having to eat in a restaurant without the staff being aware that one wrist is cuffed or tied to the back of her chair.
9) Eating in a restaurant with you holding a leash clipped to her bare pussy lip
10) As she has small breasts, wearing a bra that is padded on only one side
11) Having to carry something all day without putting it down, even in the loo
12) Having to wear an item of clothing that clashes terribly with the rest of what she is wearing
13) Having to wear something that smells strong and inappropriate instead of perfume for a day, or in a public place. Ideas - motor oil, crushed garlic, blue cheese.
14) Shopping while leashed to the shopping cart and trying not to show it (remember, stores have video cameras)
15) Sending a Valentine to the person she hates the most
And finally, an old favourite:
16) You take her to a public washroom where she removes her panties and bends over for a few severe strokes of the cane. She then has to go right back out immediately, with no time to compose herself, and behave normally.
Well, maybe that will get you started - and I like the remote control vibrator idea too. Lots of possibilities in public places.