Home Science Tools.
They sell curricula, lab supplies, and also lab kits that go along with many homeschool programs. For too many years I tried to pinch pennies by buying lab supplies individually. I'm done with that! It's not that much more expensive to buy a "lab in a box" and know you have everything beyond common household materials, ready to go.
They also sell some fun science "toys."
https://www.homesciencetools.com/
Also, Carolina homeschool science supplies.
https://www.carolina.com/living-orga...ience/12717.ct
Quality Science Labs
https://www.qualitysciencelabs.com/index.php?p=home