These are products I use all the time and LOVE! I don't get compensated for endorsing these products, just giving credit where credit is due.
Tsusineko Memento Tuxedo Black & Versafine Onyx Black
If I only could have 2 inkpads the rest of my life, these would be them! The Memento Tuxedo Black is what I use if Copics are involved. This ink will not run with the alcohol markers. If not, pigment Versafine Onyx Black is the way to go. Always. No exception. Unless I'm using Versafine Smokey Gray, of course;) These stamp so crisp and clean, it's hard to beat!
This "tape" has Post-It adhesive completely over one side. It comes off clean and works well for masking, keeping things paper in place temporarily, and holding dies in place as they cut.
These little smooth dots come in a variety of colors and sizes (from various companies too). I love them because they're fun and playful and give a bit of color without being blingy or fancy.
Where to find them:
Ellen Hutson (search for enamel dots)
Simon Says Stamp (search for enamel dots)
This card stock is heavy cover weight 110 lb card stock and it's the brightest white card stock I've found (and I'm a card stock snob). This is the only smooth white card stock I use. You can use it for Copics but there is will bleed through a little to the back.
This corner rounder is the best! I use it all the time! Very easy to use and durable!