Hi! I've used the plaidmaker at a stamp camp and at our retirement party (just to demo). For the stamp camp we did a one-sheet wonder with the plaidmaker sheet (everyone made their own 8 1/2 x 11 sheet of plaid, then I cut for the projects) we just passed around the color of the moment with the sponge brayer to everyone, then washed out between changes and I roll the sponge brayer on a towel to get as much water as possible out.
For the retirement party, they just used a 4 x 5 1/4 piece for a background of a card. I had these ready (by plaid making full sheets)except for one that I finished the last color with just to demo. I've actually sold 4 or 5 of the plaidmakers just from these 2 times we've used it.
I really like it's versatility!
It would be a great idea to invest in more than one sponge brayer attachment!

S