It might depend on how literally you mean "have lots of sugar".

If the dominant component really is physicalist/biological then things that actually contain sugar but don't look like they contain sugar will cause sugar rushes. For example fruit juice, ketchup, pizza.

If it's cultural/psychological then only things that are "sugar-coded" will produce the effect. Like candy, syrup, ice cream, soft drinks.

If you feel like doing some mad science, see if you can give your kids a rush using sugar-free coke or something like that.