DaasYochid – Ain Lo Elah Mekomo V’Shayto. I don’t know what would be “minimalistic” in your community. A piece of chicken (which is cheaper than Salami), some veggies on the side, and a starter of soup in a Shul or Yeshiva (that can be dressed up for the occasion) and a Yeshiva guy playing on his keyboard (or canned on borrowed speakers) would qualify as “minimalistic” where I am, where you are it may be more (or less), I don’t know.
kapusta – Talaisim are cheap (less than $50 on worldofjudaica.com). Besides, it is for a mitzva, vs. a Rock.