It would be worth your while to get a Business visa on your next trip. Ask around and you will find a company who will 'employ' you and arrange the necessary paperwork, charging about $50-100. Passport & photos only, no visit to a government dept. Cost varies but around $550 (all inclusive) for a year, renewable. You may pay less in following years. Multi-entry visa, with WP and Foreign ID.
Open accounts with ANZ Laos - 100% ANZ Group owned (formerly Vientiane Commercial Bank and ANZV). Put some money in a Fixed Deposit in Lao kip and get 10% p.a. at BCEL, JDB and others. Some offer 12% p.a. for 2 years. ANZ offers only 5.75% p.a. now. Search 'lao banks' for more information.