If you think Octave is worthy of a few (or many!) dollars, I would be glad to make a fair trade of dollars for continued development, improvements, and support. I would be grateful for any direct donations, payments for support contracts, or paid contracts for making specific improvements to Octave. Whatever works for you.
You can fund my work directly with a PayPal payment.
Or, if you are in the United States and a tax-deductible donation is important to you, you can contribute to the Octave project through the Free Software Foundation.
Or, if you have support needs that are not being met, then please contact me and I would be glad to discuss options with you.
Alternatively, I would be grateful for any leads you might have for other employment opportunities.