Substitute for ground flaxseed in this recipe:http://eat-drink-love.com/2013/04/no-bake-energy-bites/

Maybe wheat germ would work..?

I would either just add more chia or oats to keep the consistency.

I think you can probably just leave them out rather than subbing anything for them, but I would also reduce the agave syrup by half to begin with, then add a little more if the mixture is too crumbly.