One year old-day of birthday

My son turns 1 tomorrow!!😭 haha

We live in Manitoba, and it’s winter!

Any ideas what to do the day of his birthday?

I thought about our local aquatic center, but the public swim time hours are later in the evening when my husband is home from work, and the other times don’t line up well with his naps, and i don’t want him to be a grump! He’s been a little lately cause I’ve been pushing back his naps every few days cause we’ve had plans

But anyways, day of! What should we do tomorrow?