I asked this questions also. I know you have to have a clean record. Collecting donations is always a great to help. I think they also use help with yard work, housing maintenance, etc. Depending on your professional background, you may be able to help in other ways closer related. Also if you own your own business or are close with someone who does, you could offer services for free through that. I am a Home Organizer and I help by collecting as many items as I can from my jobs to donate. I know they just had a prom for their older children and needed a limo, dresses, suits, food, decorations, DJ, etc. It's best to contact them and see where you can be of best help.
You can sign up on their website.
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