Hi Stan,
Many of the games want a first time tent convener to show them something that says he/she is allowed to represent the clan so you might want to see about that but that is usually no problem as the clan is happy to have a responsible representative at the games.

It's nice to have a large piece of the clan tartan(s) and a map showing the primary locations of the clan. Books of tartans and surnames allow you to help people find the clan that is most closely related to their surname.

We have handouts of a quick clan history, a humorous handout (Wha's a Sassennach?), and, of course, applications to join the clan society. We also have a 18" by 21" embroidered clan crest that is displayed inside a protective frame. If you can get access to items relevant to your clan history then that is great to display but you will want to watch them to make sure they stay with you! Swords, lances, and such are popular with the kids from 5 to 90 but make sure any sharp blades are protected.

We like to have a jar filled with white and blue jellybeans of different sizes and people can guess the quantity. At end of day closest guesser without going over gets the candy. Ties are are compared for time of guess and earliest guesser wins.

We also have cold bottles of water and home-made scones but that is kept in the back, out of sight, and is offered only to those showing an interest in joining the clan society (I'm not made out of money so I'm NOT feeding everyone!! )

We fly the St Andrew flag and the USA flag and that adds some nice color to the tent. A big banner up high helps people to find you.

If you can't wear a clan kilt, you should have a t-shirt or polo shirt with the clan crest. Know your clan history, your chief's name and such, and perhaps some famous members of your clan, both historical and modern. Be friendly and greet people before they greet you.

Make friends with the tents beside you and be willing to watch their tent if they are solo so they can take necessary breaks and they will do the same for you.

I'm sure others will have more and probably better suggestions. Have fun.