Projects that are part of a grant likely have external funds that can be used to support the project. See your advisor about this possibility.
For project costs (e.g., user study remuneration, PC peripherals, software), students are expected to absorb costs of about a "textbook" each ($50), per term. For example, a 3-person MQP team might be expected to spend up to $150 each (total $450) for the project.
For project costs beyond this, the department can provide support. Currently, this is about $100/student total. For CS students, see the CS MQP Team Budgeting document for details.
For costs beyond that, CS students can fill out a Funding Request that provides a (very) distant option to provide additional funding (again, no guarantees). Important! Such a request should be filled out only after spending the above money.
For financial help beyond this, including financial concerns, food insecurity, emergency financial Assistance and special circumstances, the Dean of Students Office can provide help.