We give the kids orange slices at half time (hydration + immediate energy boost) and no snacks after games. (thelunchtray.com)
For getting an immediate energy boost that won't turn into a spike later, you can't do better than nuts. (ecosalon.com)
Energy bars: For energy supply before, during or after sports, different types of carbohydrates can be used for an immediate energy boost, for a sustained energy release or a combination of both. (vsi.nl)