I know how hard it is to train stack on the table, especially with thus young devils :rolleyes:. I'll looking forward to next pics on the table :).
On the last pic he looks so tiny :D.
Cosmo looks good on the table, you look like you did a better job of it than me :D
I have practiced twice with Malaika on a table, getting her to stack and examining her etc but i think i need more practice. I'm going to get a rubber bath mat to put on the table.
RV/Caravan places carry a non slip item for cabinets and such that could work wonderfully for you. I have used a similar product used as a base for rugs on hardwood floors as well. It washes up easily, too.