Aaron's birthday isn't until December but I'm looking for lacrosse party stuff now because it's hard to find. So far I've been able to get a couple of things. A friend used this lacrosse stick from Amazon on her son's cake so I grabbed one of those for our cake.
Next I found some stickers and stationary for a lacrosse board with pics of Aaron playing lacrosse.
I also ordered a couple of these cool lacrosse pens-here.