Pickles, bananas, cucumbers, carrots, they're natural. I won't use anything with potential sharp edges or that can introduce unnatural bacteria or fungus.

The fridge is full of cool items. The obvious cucumbers, carrots. The feeling of them cold is very nice :) Popsicles work but get them wet first or they tend to stick in all the wrong places. Bananas are also good but size matters and if you peel them just know they squish and break and get very messy. Candles work great. We have some in a centerpiece in our dining room that can go in both places and then when they are lit and you are having dinner it is cool to remember where they were before :) The arms of chairs are also great to straddle and rock on. Some people I babysit for have these awesome chairs in their kitchen with chrome armrests that just rock. They are cold at first and then warm as you press against them. I also like to straddle bottled water that is cold or slightly frozen. The bottle needs to be firm though. Sam's Choice Clear American works great. Black Cherry flavor and you can drink it after. The wii remote is also an awesome toy. Besides the obvious it is cool to try and play some of the games that require motion with it in you :) Aghain later when you play the game regular like with other you can remember where things have been. There are also fun things you can do with regular kids toys. Light sabers are fun, so are toy guns and rockets. Kitchen utensils work well too. I like the ones with the big soft handles like the Kitchen Aide ones and those OXO brands. Wine bottles are cool too, and I like them to be cold. They work better than beer or pop bottles cuz they don't have such rough caps. The cork with wax is easier to insert. They also have cool shapes from narrow, long and tapered to shorter and widen faster. Be careful though if you pick them out for bottle shape cuz the wine may not be so good. If someone in your family plays golf, you can use the handles of the clubs too. They aren't real thick but its still a naughty feeling and is good for variety. If you like sort of weird feelings you can use a turkey baster. Be sure to do this when you are either in the bath tub or by the sink. You fill it will really cold or really warm water and then well you squirt the water in at the right moment. It's a rush but is is best to be close to ready when you start or the water gets back to room temp. Massaging shower heads, hot tub jets and bath tub spouts are all obvious. You can also use some shampoo tubes and new tubes of toothpaste. Cap end first though obviously LOL In the den or office you can use the arm of a chair again to straddle and rock, you can try as many pens and pencils as you can fit, and we have a real cool letter opener that has a perfect handle for insertion purposes. Well, that is a good start anyways. :)

ELECTRIC TOOTHBRUSHES!!! It is a little strong, but amazing!

i think with your imagination, anything could be fair play :) ... just be sure that everything is CLEAN before you start ...