Imo prefork funded precious metal when available
1. Bitbills
2. casascius
3. Btcc
4. Lealana
5. Denarium
6. Polymerbit
7. Cryptoimperator
8. Satori chips

Post fork funded
1. Mybits
2. Squirrelbits
3. Ballet cards and coins
4. Icarus cards
5. Alpen
6. Mrcrypthodl 🤔