What's the best location to place the balloons outside to freeze?

The best place to put water-filled balloons to freeze is a location where they can be in the shade for the majority of the day. The thaw/re-freeze action that can occur from placing a water-filled balloon in a very sunny spot to freeze can sometimes cause the latex of the balloon to fail—especially with larger globes.

Reminder: Water-filled balloons should not be placed on stone or decking as it could hasten the bottom freezing.

Snow acts as an isulator, so it should be under the balloon's freezing base, but if possible, brush any snow away from the top and side surfaces of the balloon while it is freezing.

Place water-filled balloons at lease a foot apart from each other while they are freezing, as the heat from other balloons could cause the unfrozen cavity of the balloon to be off-center.

TIP - Fun science experiment to do with kids: If you place two water-filled balloons right next to each other so they are touching, when they are opened, the central cavities will be kissing as well.