Providing your workforce with fruit is a great way to provide a "feelgood factor". Keep feeding the monkeys bananas and maybe they wont notice that they haven't got a payrise or that you have been embezzling their pension funds.
It can be good to get together and do something fun as a team outside of work. Perhaps attend a comedy night. Be imaginative, if your budget doesn't stretch to seeing the real Lee Evans, perhaps consider seeing a 'tribute' act as an alternative.
Is your drab office bringing everyone down? The benefits of spending just a little money on paint and furnishings will be repaid by a more motivated workforce - and don't forget the importance of making a good impression to clients.
An uninjured worker is a happy worker. Investing in safety is a good way to keep productivity high. By training your own workforce you will help to give ownership and buy in to the process.