Sharps container systems provide solutions for the safe and effective containment and disposal of contaminated needles, syringes, and other sharps. The stackable sharps containers are puncture-resistant and Autoclave- and incinerator-safe. The tortuous path systems restrict hand entry. The extended neck sharps containers feature a Funneled vertical drop and extended handles. The extended neck sharps containers feature a Funneled vertical drop and extended handles. Puncture-resistant and Autoclave- and incinerator-safe.