I’d try looking in the club banner thread. But generally speaking, most clubs that do EC parties don’t allow you to pay for just one party. At the least it’s usually 14 parties per bento. Some clubs do accept miscellaneous items, but you usually have to stay a full session.
You can exchange stat items but I doubt anyone will do money gifts, if that is what you meant. There’s a club that does 1 party for 5 chibis, if that helps. They post in campus, keep an eye out.
Some clubs let you join ec parties as long as you gift the dropper, so cash gifts would work for that aslong as the dropper isnt maxed ofcourse