"Houdini"

You look at her not sure how she would react, but she seems enthusiastic to just about anything now. "We could play 'Houdini'?" She looks at you a bit quizzical "What's that? How do you play it?". Still feeling a bit unsure about this but since you started you may as well go with it. In for a penny...

"Well its a game where you have to escape from being tied and gagged. You know like magicians and escape artists do. Only without something horrible happening if you don't get loose. You just pay a punishment and go again" She looks at you with her blue eyes and you can't tell anything from her face she just looks at you as to continue explaining, so you do.
"OK. Let's say you go first. I tie you up and give you lets say half an hour to escape. If you can't then you would have to pay a punishment, like i would tickle you or leave you tied up for another half hour. After that i tie you up again differently until you escape. When you escape then it's my turn and you tie me up. The first one to escape 3 times wins."

You hold your breath as you wait for her reaction not sure if you just freak your little sister out. She just stands there for what seems to you like eternity as she ponders the game you just proposed.

"OK. Sounds like fun." and you finally start breathing again. "Where do we get the ropes?"
"Oh!" You pause as if to ponder the question "I think there is some in the basement" You try to act nonchalant even though you know there is a ton of clothesline rope down there that you accumulated over the years. "And we could use scarves and socks. Why don't you go look for scarves and socks we could use, and I'll go look for the rope."
"Will do sis" and she goes upstairs to the bedrooms to look for them. You take a minute to calm down as you heart was in your throat the entire time. You finally did it you are finally going to experience bondage besides in your head. Feeling like you achieved a huge victory you go collect your ropes from their hiding place. You pick up the safety scissors for a quick release and some duct tape as well. Who knows maybe you'll end up using them.
When you come back you see Amy has gathered a lot of scarves, socks, ties and old tights. And sprawled them across the floor. As you put your ropes down it looks as you kink threw up on the floor. You notice that Amy has changed clothes. She put on some black leggings and socks and a pink tank top. Probably a good idea so you don't get rope burn and so your clothes don't get in the way.
She looks at you and says "Well Karen. Who will go first?" you can hear a bit of enthusiasm in her voice. This is going better than you ever hoped.