Missing it

Hey Marines,
Looking for some help. I got out in 2004, biggest mistake of my life. I got out because of an injury that I sustained in boot camp that I did not say anything until I got to my unit, by then I had done too much damage. So I thought I was ok being out. I missed it but was doing good. Then my step son decided he wanted to Dep in. A few weeks ago they had a parents night where the poolees got to get a small taste of boot camp with the drill instructors. It was that night that I realized that how much I miss it. I know they are not taking prior enlisted but feel I want to be involved in some way. Any ideas?