A fun game to Select Who? does the task.
Everybody puts their finger on the screen the app will then select one of you at random.
Uses can include
- Who buys the first round of drinks?
- Who takes out the bins?
- Who goes first in the game?
- Who goes in goal?
Features
- Supports from 2 up to 10 fingers (depending on the multitouch support from your phone)
- Great sound effects
- Free
- Runs on both Smartphones & Tablets
Who draws the shortest straw, coin toss, rolling the dice, spin the bottle are all in the past.

Screenshots: