$100 gift

So grandparents are asking for a Christmas list of around $100.00. They prefer to only get one gift possibly 2 with that amount. What are some good ideas? Anything for outside and the spring is ok too, for planning ahead. We have a play room and a trampoline and a climber currently. Any other ideas? Have 18 month old little guy the size of a 3 year old and due with his brother in the spring so things to occupying him independently would be a perk too.