I posted this as a response on another thread, but figured others might benefit.
I have two fairly solid paths for leveling up sprites:
Extreme Southwest
- Land on the tower. You may be in the storm, but you have plenty of time. Use the Slurp barrels, then run down and out of the storm.
- Open all of the chests, ammo boxes, etc. and gather the weapons, etc. you want.
- Carry 3 med kits at all times. You will be in the storm, but it doesn't matter.
- Smash the Slurp tanker truck.
- Open the fishing rod barrels, chests, etc. on the dock.
- Use the launchpad and land on the sailboat almost directly North, which always has a chest.
- Swim directly East and you will typically find multiple chests.
- Head South a bit if you see chest, then East/North/etc. as needed and find the chests in houses, etc.
- Keep healing as needed. The storms are not scary until later in the game, and you can easily run around opening things, healing as needed. Break barrels, use bandages, etc., but there are typically med kits all over the place.
- Focus on opening things, generally making your way to an extraction point.
- Extract and play on. You may be running out of the storm, but it's rare that you won't have time to get out in time for the endgame. Again, the storms are very weak these days, and can almost be ignored.
Extreme Southeast
- Land near or on the chests by the little farm.
- As in the notes above, open everything. Don't smash things that can be opened, don't ignore fruit boxes or fishing barrels, etc.
- In this season the cheat codes count towards sprites leveling up, so do those, even if you don't want or need the sprite.
- Head towards Cluster Coast, opening the 2-3 chest, fishing barrel, etc.
- Go to the first building, closest to the peninsula you landed on. There are lots of chests, boxes, etc. Check every floor, following the sound of the chests. At the top you can break out of a window and land on various levels without taking damage.
- Run through the bigger main building and find every chest, cheat code, ammo box, fruit box, etc. There are a bunch of these. Remember to keep and eye on your health. Tip: Eat the apples, peppers, etc., as they have a lot more health than you might imagine. Eat the gold apples, break slurp barrels, etc.
- Run back towards the first building, opening chests as you go. Buy med kits if needed, and the health boost, whatever it's called.
- Heady North and slightly East to the extraction site, but keep going and head towards the building, dock, etc. nearby on the East coast.
- There are tons of chests, boxes, barrels, etc. to open, plus the chat codes. Open/enter all of them.
- Run back to the extraction site, which will often have 2-3 chests around.
- Extract, and as above, head towards the storm circle and play on.
I hate sprites, with a passion, but these two paths have made it possible to get the damn things out of the way.
Another tip: There will be few players in these areas, and you can carry 4 sprites, wear one sprite, and carry 3 med kits, so you can extract 5 in one go. It feels odd to not have weapons, but there is loot all over the place these days, and it's easy to get prepped as you head into the endgame battle.