Put in solar path lights

Push them in, wait for a sunny day. No wiring, no digging, no switch.

How many lights?

lights

This fits in a car

About 10 lb of materials. Comfortably inside what a car carries (200 lb), so any shopper can take it.

What to buy — untick anything you have

Electrical

8 Solar path lightOften sold in packs of 4 to 8. Buy the packs that get to the number without going under, all the same style.
2 Solar spotlightFor a tree, a flag or the house number. Skip these if the customer only wants path lights.

Tools — already ticked off, since most people have them

Tools

It lands in the shopping form, where you can edit anything and say what you think each thing costs. Nothing is ordered until you send it.

How it goes · about an hour · beginner

Charge the lights in full sun for a day before putting them out, with the switch on the bottom turned on.
Space them 6 to 8 ft apart along the path, set a little back from the edge so the mower misses them.
Water the ground first if it is hard, then push each stake in by hand or tap it gently with the mallet.
Aim the spotlights and check them all after dark, moving any that sit in shade all day.

Something else

Feeding people instead? The recipe book works the same way — pick a meal, say how many, every ingredient lands on the list.