Etsy. There are treasures to be found!
I'm seriously considering this little chap. He might just cheer up some of the people I work with. Alternatively, this guy is a (slightly) more sombre option.
this little ladybird tugs at my heart strings (call me sentimental, but somehow he really reminds me of my childhood).
There are also lots of fun bits available on ebay. If you need something to cheer you up at work I seriously recommend hunting for a pen holder.