We did dive rolls and layouts over the table (also, bounder over to mats stacked up on the other side) but it took a few years to work up to that. We basically start doing them up to a resi in L4 and then they start them over a trapezoid with two pieces, then add a piece, then trainer into the pit, etc. By L7 or so they start introducing the progression for barani over the table/trainer.
On tumble track or tramp, bounce from knees to HS with good heel drive (on track they can go from HS to knees, and back, down the line).
(wall) a few steps hurdle towards wall, jump to push off wall, trying to drive legs up to horizontal. That's a horrible description, I can try again if it makes no sense. Later on we would do this to a push off, rebound tuck. They need to hurdle with enough room for their body length in front of the wall so they aren't crunching - a sting mat placed in an appropriate place might help with that.
(from HS, ankle weights can be added) drop to push up position, bounce back to HS (heel drive, no pike). I do it off a resi now (hands on hard surface) although I haven't decided how much more effective that is.
We spent most of L7 doing on the regular vault set up, a few steps (10-15 foot run) hurdle timer to HS. First with spot, then without.
front handspring up to a wedge mat (hands on the low part, landing on the higher part). You need a fairly big wedge for this, but you could probably figure out some set up with eight inchers.