Considering the various uses of a snake light is the first thing to check before purchasing one.
As always, always do an actual or spot checking of the light (turn it on and off) prior buying to make sure the lighting capability (or brightness) is enough in accordance to the requirements.
Another thing to consider will be the battery life, ask how long it could last.
As suggestion, use rechargeable battery for practicality.
Computer system snake lights are commonly powered via USB, saving some money from not purchasing batteries, but it consumes the computer (or the laptop’s) battery within the process.
Snake lights are offered in the market through electronic stores and also online shopping.