We use a three way hose connector and just block or open the 3rd side with a thumb to activate/deactivate the vacuum pressure at the tip. The pump was $20 and

We use a three way hose connector and just block or open the 3rd side with a thumb to activate/deactivate the vacuum pressure at the tip. The pump was $20 and the end is a 5cc syringe. All in, it was under $40 and works great!