I have a sturdy table but it still will do the jumping on fast speeds. (not too bad tho) At the LQS a few yrs back, they were selling mats to go under the machine that had pockets in the front to hold scissors, etc. for conveinence.I remember there being heavy plastic in this item. The mat was supposed to keep the machine from shaking.
I would use those rubber shelf liners you can get at the dollor store.