Both 75217 bands are priced on Amayama.com. The earlier band includes the hook, the later band does not. Being priced indicates that the part may be available. Follow the instructions on the site to submit a query, they will reply in a day or two with availability, price, shipping. The order can be confirmed at that time or discontinued.
Repro bands, without the hook, are available from several cruiser parts vendors.
The hook by itself appears to be available from Toyota as part number 58796-20012 - Hook, Jack Clamp.
Neither 75216 bracket is priced on Amayama.com. Check with Mud vendors that specialize in used parts.
The tool band hold-down bracket 75214-90301 is priced on Amayama, don't know if it is actually available. Otherwise, used parts vendors for these as well.
7807-8309 - under driver's seat (7807-7901), top of PS rear fender well (7901-8309)
75214-90301 - bracket, tool band hold-down (2)
75216-90301 - bracket, tool bag band (75216)
75217-90300 - band, tool bag - no hook (75217)
7509-7807 - under driver's seat
75214-90301 - bracket, tool band hold-down (2)
75216-90300 - bracket, tool bag band (75216)
74701-95601 - band, tool bag - with hook (75217)