Here are some more items I intend to use for the engagement party Saturday.
(also posted in the napkins post)
Since my colors are black, white, and silver I used the silver metallic ink. If I had to do over I think I would just do the black ink on white and silver napkins. The matallic ink can become really tacky and stick to the napkins.
Cost:
Customer stamp $6.99 from Ebay
stazon ink $8.99 (with 40% off coupon. Black ink is only $5.50 with coupon) from Michaels
cocktail napkins 30 pack for $1.00 at dollar tree

The great thing is now that I have the set up I can do this for the showers, and the wedding as well. I plan to get every penny out of this.
I also made some custom water bottles for the party. I only took photos of the front and back but on the side in between the two monograms it says "Thank you for sharing in our special day."
Cost:
Template FREE I googled it and found it online.
Paper 3 labels per page means I only needed 8 pages to do a case. Had it so FREE
Ink I already had a printer with ink. Also Free
Water bottles $2.50+$1.20CRV
Total cost $3.80 for 24 customer bottle waters.