I second Robin, buy a couple sets of decent rechargeables, would be more more economical (unless by garbage you mean you use already drained batteries) and environment friendly than throwing away all those batteries. And you could always have charged up sets if you buy 2-3 sets.
Espruino is a JavaScript interpreter for low-power Microcontrollers. This site is both a support community for Espruino and a place to share what you are working on.
I second Robin, buy a couple sets of decent rechargeables, would be more more economical (unless by garbage you mean you use already drained batteries) and environment friendly than throwing away all those batteries. And you could always have charged up sets if you buy 2-3 sets.