Inside my large sample packs I usually have an outlet flyer, a postcard (I use this for a recruiting flyer), a business card, and 1-2 samples. Usually a lipstick bullet and maybe a fragrance, or a large trial size fragrance, or 2 fragrance samples. Try not to break the bank, use what you have available.
In my mini packets I use a business card and 1 sample. I lean towards the lipstick bullets because they're so easily recognizable.
Below is a step by step guide.
X-acto blade for a straight line.
Step 2: Insert the items you'll be using inside your packets and then you have 2 options. You can fold twice and use a sticker to seal your packet or you can use a heat sealer to heat seal the edges