Amazon has the Scotch Flex and Seal 50′ x 15″ Shipping Roll (FS-1550) for $15 with free shipping on $25 or with Prime. Easy packaging alternative to poly mailers, no boxes or tape needed.
Amazon has the 12-Count Sharpie S-Note Creative Markers (Chisel Tip) for $5 with free shipping on $25 or with Prime. Versatile markers double as highlighters.
Amazon with Plus Corporation of America has the 3-Pack Plus 59435 Guard Your ID Advanced Roller 2.0 Identify Theft Security Stamp (Blue, Pink, Purple) for $21 with free shipping on $25+ or with Prime.
Amazon has the 36-count BIC Round Stic Grip Xtra Comfort Medium Point (1.2mm) Ballpoint Pen (Black Ink, GSMG361BK) for $4.24 – 40% with code 40OCT at checkout = $2.54 with free shipping on $25+ or with Prime.