If the 100-envelope challenge doesn't suit your needs or preferences, there are other money-saving challenges you can try. One popular option is the 52-week money challenge, where you gradually increase the amount you save each week for a year, resulting in an extra $1,300 in savings. The jar challenge involves saving all your spare change or $5 bills, allowing your savings to grow over time. The no-spend challenge is another option, where you commit to not spending on non-essential items for a set period of time, helping you develop healthier spending habits.