All you need is a lighting fixture within the case, a fluorescent growing bulb, and maybe a portable power supply to activate the case’s fans to help circulate air within the case.
A novelty mailbox can add some pizzazz to your home, giving passersby an idea of your personality. If you love computers, you can use an old PC tower as a mailbox.
Remove the internal components and drill in a support board on the bottom or sides. Those PC towers with disc drives already have a convenient letter slot that just needs a flap.
Rather than purchasing shelves for your home that might not fit the dimensions of your available space, you can use one or more old PC towers as modular shelves.
After removing the internal components, remove the outer panels fastening screws and turn them around. Use them to secure the tower to the wall, preferably into a wall stud.
A PC case has plenty of room for small, rectangular storage containers, which can be mounted to the inside with a combination of fasteners and existing mounts.
PC towers are surprisingly heat resistant, as they need to keep the internal components from melting. This makes them perfect for transforming them into barbecues.
Once you’ve removed the internal components, just lay the tower horizontally, remove the side panel, place a little tub of charcoal within, and lay a grill grate on top.