I got called out in this thread about cheap miniatures to use while you build a collection. My group (14 year old daughter and twin 9 year old boys) has built Lego Minifigs to represent their characters. They bought some accessories from Brick Forge. My daughter has hers, so I won't be able to post them until this weekend.
I also use printable figure flats, and have included a pic of them at the end. The party has several henchmen as well, which also have minifigs. You can read about their first adventure here.
Jackson, the human earth wizard. Quarterstaff has light spell cast on the end. Backpack and potion.
Narcisso, the half-elf cleric and Dravin the human druid.
Kargash the half orc ranger and Rurak the dwarf barbarian.
These last few are from the Lost Mines of Phandelver, which my daughter is running us thru. We've only had one session, so I forget their names.