A copy of the map of tourist attractions from the TAT of Loei.
I can recommend :
03 Have a lunch at Huai Krating lake
05 Visit Wat Tham Pha Pu
14 Walk in the Pha Ngam Rock Garden
16 See sunrise at Phu Kadung National Park
18 Watch wild elephants at Phu Luang Wildlife sanctuary
19 Swim at Pla ba Waterfall
23 Visit Phitakon museum
24 Wat Neramit Wipatsana
25 Phra That Si Song Rak
26 Wat Si Pho Chai Saeng Pa
27 Phu Suan Sai National Park
28 Phu Rua National Park
33 Phra Phut Mongkhon Lilatha Buddha image
35 Visit Kaeng Kud Ku at the Mekong River
36 Ancient wooden houses
39 Wat Phochai Na Pung
And although not mentioned :
40. A visit to Na Heao border to Laos
41. Walk in the Erawan Cave
If you like some help with organizing your holiday anywhere Thailand send me an email at The Little Elephant Traveling in Thailand.