One thing that may be hard for people to understand is why dry ice can burn you. When CO2 reaches a low enough temperature, CO2 becomes so far beyond the point of frozen that it will feel as hot as coal if it touches your skin. Avoid skin damage, coal-like burns and a trip to the emergency room by always wearing gloves and protective gear when touching or handling CO2. Liquid nitrogen has similar properties of dry ice.
When the temperature gets too warm, typical ice from your freezer will melt into a puddle of water. One benefit to dry ice is that it will evaporate into thin air because it goes through a sublime process and forms a gas when not kept cold enough.
Environmentalists are fans of dry ice blasting process used for cleaning. Many other ways of cleaning release a lot of waste. Dry ice blasting leaves no waste behind. Blasting involves a lot of pressure, precision and the correct tools. Trained commercial cleaners and science experts should be left in charge of blasting.
Solid blocks or pellets of dry ice can be shipped in a truck if stored in a well insulated containment case. It can also be shipped on a plane, but there are very strict rules so check with the airline first.
If you are an experienced chef, you can actually cook for a party with dry ice. This can be an interesting cooling process for guests to watch. Just be careful that no one touches or tries to taste the dry ice.
You can also try at home experiments with dry ice. Your experiment, if done correctly, should result in fog, smoke and other side effects. Study up before doing an experiment with dry ice and always take safety precautions.