Amazon has the Logitech G300s Optical Gaming Mouse (910-004360) for $20 with free shipping on $25+ or with Prime. Has nine programmable buttons, three on-board user profiles, symmetrical design, and is able to track on a wide variety of surfaces.
Staples has the Logitech K375s Multi-Device Wireless Keyboard and Stand Combo, 2017 model (920-008165) for $30 with in-store pickup or $10 shipping. Easily switches between PC and mobile device (compatible with Windows, Mac, Android and iOS).
Best Buy has the Logitech M330 Silent Plus Wireless Optical Mouse (Gray/Yellow; 910-004908) for $7.99 with free in-store pickup or $5.49 shipping to home. Features a 2 year battery life, wireless connection up to 33', and automatically puts itself to sleep when not in use.
NeweggFlash has the has the refurbished Logitech RGB G810 Orion Spectrum Mechanical Gaming Keyboard, 2016 model (920-007739) for $65 with free shipping. Has customizable RGB lighting and ultra-fast, ultra-durable Romer-G mechanical switches with a actuation point 25% shorter than average for faster response times.
Update: Walmart's price has gone up, but Target still has it for $50.
Walmart has the Logitech G413 Backlit USB Mechanical PC Gaming Keyboard (Carbon, 920-008300) for $50 with free shipping. Target has it for the same price, and REDcard holders (sign up) get an additional 5% off in cart.
This Tom's Guide Editor's Choice gaming keyboard has an aircraft-grade 5052 aluminium alloy top case, Romer-G switches and integrated, separate USB passthrough port.
Amazon has the Logitech Z207 2.0 Bluetooth Computer Speakers (pair, black) for $24 with free shipping on $25+ or with Prime. Target has them for the same price [Exp 4/14]. Connects via Bluetooth or 3.5mm cable.