You might be able to find something like them. Remember that the light you put up does not have to be an aquarium light if it is not going to be in direct contact with the water. If you got one like the first one you could probably use a regular clip on type like you would get for a desk lamp at the office store but I would take your parent with you and show them the light you are looking for one like and be sure to get a gooseneck type where it will clamp on the tank and yet the actual bulb will be away from the water itself to be away from any splash that might hit it. When you change the water always be sure that you turn the light off to avoid any contact with the water. (unplug it or unclamp it from the tank and turn it off and lay it away from the tank.) If you use an office light I would point the light in from the side of the tank instead from above as it will be less likely to get splashed on.

Otherwise check with the local pet stores and see what they have for lights but ask them to show you how they have to be installed as some lights need to have glass tops on the tank to be safe. If you buy an office light I would even suggest you buy a glass top to cover your tank top instead of the plastic canvas. It is solid and will not allow air in but it will not allow splashing on the light either. They look like this and you get them to fit the size tank you have and they should have them at any fish store.

All-Glass Aquarium Versa-Top Hinged Aquarium Cover at PETCO

Rose