$tars can be made in either a 5 point or 6 point configuration and can use any denomination of bill.
If giving as a gift, an Origami Triangle Box (http://www.instructables.com/id/Origami-Triangle-Box/) or Origami Gift Box (http://www.instructables.com/id/Origami-Gift-Box/) would make the perfect vessel to present your gift in.
Hopefully the pictures explain well enough how to fold and connect the units but if you get stuck my commentary will be below the pictures. If you don't need to read it then don't, explaining origami is weird and will probably just get in the way if you understand the pictures already.
-5 to 6 bills, the the crisper, less ghetto, and highest denomination the better