Swampcat-
You don't have to bring anything to the trail brushing event, but if you want a 4 wheel drive vehicle or ATV is nice to have. We typically do more signing than actual tree or brush cutting, so saws can be helpful, but mainly it is just digging holes in the ground to plant the posts into and then put the signs up. I suppose if anyone had a motorized post hole digger, that would be a nice thing to have!
It is an organized event (by me). We split up into groups, each group has a "leader" who is trained in the proper way to mark trails according to the DNRE. Each group then has a specific area that they take care of. We all head out in the AM, come back in the PM and have a good time.
It is a rain or shine event, so proper outerwear is a must. The weather that time of the year can range from upper 50's and low 60's and sun to 40's with rain or even 30's and some wet snow.
Two years ago the weather was perfect, last year not so good, but I hear everyone still had fun and got lots of work done.
-John