I want a simple solution to create my own corporate branded clothing

A good solution is to look for a package deal that includes various garments as well as any set up charges that may be incurred for your logo.
A common term is a 'Man Pack' and they often consist of the most popular clothing to cater for one person.
I would recommend the following items to start with:
Poloshirts - the most popular promotional garment
Sweatshirts - A great compliment to the poloshirts
Fleece Jacket - Great for those chilly mornings
Work Trousers - Completes the top to toe
Add baseball cap and a hi viz vest, ensure all items carry yourbranding and you have a complete branded uniform.
As many companies have minimum orders, by doing it this way you can build to a minimum quickly without having too many of the same item.

Golf Day

We are organising a golf day and want some high quality products for only 20 VIP customers what do you suggest?

For a small quantity clothing is a fantastic option. You could go for

Branded poloshirts

Waterproofs

Windcheaters

Golf Caps

Golf Umbrellas

Don’t forget trophies for the awards dinner afterwards!

Promotional items for an exhibition

I’m looking for promotional items for an exhibition what can you suggest?

You’ve mentioned it is your company’s first exhibition and there isn’t a huge amount of space available so I would recommend:

Pop Up Banners – Easy to carry, not too expensive and can be carried everywhere

Corporate Clothing – There are companies who will personalise just one poloshirt, jacket, baseball cap, work shirt, hi viz jacket and this makes you look like a bigger company from the start.

Giveaways – From pens or keyrings to goody bags

Best of luck with the show