A couple others I've witnessed:
Ideas only go down When employees tell you of actually useful innovations to a product do NOT agree it is a good idea. Mention that it is cute they are trying, and pretend to forget about it. In 3-6 months have a VP flash brilliance and push that innovation down from the top. All employee protests of "I have been pushing for this for months" are to be stonewalled, possibly with discipline.
Permanent emergency mode VP or CEO comes down to the dev team in a panic at least once a week handwringing about how "OMG we're fucked if we don't fix this" Complaints of "its been crunch time for a year" are met with replies about other duties as assigned, how if they just did their job this wouldn't be necessary, and company solvency.
Praise only the shitty employees Never ever ever praise the employees who solve a problem. Actively deride the employees who consistently solve problems, deliver results and so on. This triggers a "what am I doing wrong" response in them, and gets them working even harder.
Keep the situation confusing Give employees a set of tasks today and have them undo that same set of tasks tomorrow. In a week, do it over. Half way through a day, come down and demand something at top priority, then raise hell at the end of the day that they didn't finish the work you preempted w/ a top priority request.
rules! (this one works quite well in the food service industry) - impose rules that almost make sense at slow times, but which add unnecessary process and overhead. Insist on these rules being followed strictly during the busiest times. If the plebes find ways to speed up the process that is still with in the rules and has the same effect, begin the firings. Double down if the process reduces tips or rate of sales for the business. (It turns out most employees want to make you money, even waitstaff).
Find ways to keep your employees cash-poor Make them pay out of pocket and have very slow reimbursement procedures. Delay paychecks or even sneakier, have "problems" with direct deposit. The net effect is employees with less liquid money than they might otherwise have... helping get them into that nice trapped state.