You might want to reveal which ecig you are using to let people recommend specifics. What you are describing is a method we used years ago before cartomizers and
tanks became popular and we all threw our fiberfill carts in a box in the closet.
And Ego Spinner and a few boxes of SmokTech cartomizers would be a great replacement for all of the hardware you are describing.
Walmart sells bags of polyester fiberfill that is used for stuffing pillows. It comes in two varieties. One has a fire ......ant label on the back that states that it is safe for use in the state of California. DON'T buy that one. Buy the one that doesn't say it contains a fire ......ant.
You can also go to the local pet shop and buy blue Fluval filter foam. It comes in sheets and you just cut a size that will slide snugly into your 510 cart.
If you have 510 threads or 808 threads on your
batteries, just order some cartomizers and fill them like you did the carts. You will be much happier going a good portion of the day without refilling. I carry a small 3ml squeeze bottle in my pocket for topping off cartos during the day. They work similar to a 510 cart but hold much more
juice and have the coil built into the device.