Harbor Freight sells them for $3 or so for the small and $4 for the larger...mechanics use them under the car they can just put the screws over their heads, etc. They are wonderful, I have 4 of them..one by each machine and the cutting table and ironing board. HF is on-line!
http://www.harborfreight.com/4-inch-...ray-90566.html
and here is a COUPON!!
http://promocodesforyou.com/index.ph...FbFxOgodTWsAoA