You can now buy gift vouchers for use at Union Micro! They come in denominations of 10, 100, 250, 500, 1000, 2000, 3000 and 5000 Lindens. See the vendors at Union Micro on the ground floor and second floor for more details.
To use the vouchers, simply rez them near a vendor and then touch the vendor. The item displayed on the vendor must be priced less than or equal to the amount of credit left on the voucher. The vouchers will only work for vendors at Union Micro and do not work on affiliate/catalog vendors.