We try to get outside everyday but we have one small issue being that Lil' Digger loves to stuff his face with handfuls of dirt. My solution has been to let him dig to his hearts content in a tub full of rice puffs. I threw in some kitchen utensils, including a funnel and some tongs. This cheap and edible sensory tub made a great play station at Digger's birthday party this week too.
Both kids (3 & 1) are completely engaged by this activity and play happily side by side. Not a bad way to spend a sunny winter's afternoon.