Many years ago I stopped by a gas station where the clerk had on the counter a set of homemade dice that customers could use to generate random-ish lottery numbers if they were suspicious of the computerized quick picks and unable to come up with random numbers on their own.
This is a set of six octahedral dice for generating lotto numbers in 6/49 games. Many states in the US and various countries have lotteries where players choose six numbers out of a field of 49. If you match all six balls you win the lottery jackpot. Some examples of these games are Lotto 6/49 in Canada, Ohio Classic Lotto, New Jersey Pick-6, Washington Lotto, 6 aus 49 in Germany, and Superlotto 6/49 in the Philippines.
Each of the six dice has eight sides engraved with a different number for a total of 48 numbers. Since "6" and "9" are not distinguished, the dice can produce all 49 numbers. When rolled together the dice can generate 294,912 different lottery ticket combinations. (If you roll the "6" you have to decide for yourself whether it's a "6" or a "9.")
The dice are centrally connected by a small sprue that needs to be cut off each die. Each die is about 12 mm along the edge. Makes a great gift for the lottery player or gas station clerk in your life. I also sell a smaller version. (Dice are not guaranteed to generate winning combinations.)