You can use any glass jar and metal lid. Smaller canning jars would be cute too, but for the one we made, we recycled a food jar. The lid and jar are from Tahini I bought at the store.
The pump itself is recycled from a Bath & Body lotion dispenser I received as a gift. Once the jars were empty, they were washed and dried. The dispenser itself had a much longer tube underneath that required being cut.
The lid was drilled through with a hand drill (using proper safety), and secured inside the lid with a tie strap. Now we can refill our soap dispenser with bulk soap, or make our own.