I have this hobby of collecting all those pens giveaways from product launching, company corporate gifts, freebies and etc. Nowadays, they come in all sort of colours, shapes and some even with lights and other thingamajig.
If you are not sure what I am talking about, take a look at PensRUs which is a site with a huge range of promotional pens which are cheap, presentable and usable. They have so many famous brands like Pentel, Bic and etc. If you are planning any event and already have so much on your plate to do, just solve the headaches of getting souvenir items by ordering a bunch. It represents your company and is something people are not likely to discard because pens are so useful.