C cleaner: junk file removal for PC (Windows OS) and Apple Mac OS. Acquire it here.
C cleaner web browser: similar to the above but also includes advertisement blockers for websites. This is only for PC (Windows OS) as of June 19, 2020. Acquire it here.
Grammarly keyboard smartphone/tablet app: a great grammar and spelling editor that corrects you and suggests optional corrections while you type. Acquire it for Android OS here and Apple iOS here.
Low-cost business cards at www.GotPrint.com. Use a coupon code for 10% off.