I made an electronics service board from plywood, about a foot wide, and a pair of 2x6's screwed in across the ends.
One at the leading edge to keep the plywood from slipping back, and one on the wing to hold the plywood level. Then I could sit in the RV-8 front seat, and keep tools, parts etc on this level bench. The aft end of the bench is not to the tailing edge. There is enough room to stand on the wing walk and get in the plane. This reduces the number of times I need to get in and out of the plane, depending on my ability to plan ahead (limited).
I use a common lawn chair to step up onto the wing when using my electronics service board, also when I need to spend more than a few seconds with my knee on the wing, like if I am hooking the battery charger to the fuse panel or packing stuff around the pilot seat for a trip.
Yes, the angle of the wing is annoying at times, my wife's RV-4 is much friendlier. However, as much as I love the RV-4, it is not an RV-8.