Examples of tied aid include:

1. Military Aid: A country may provide military aid to another country, but require that the recipient country purchase weapons and other military equipment from the donor country.
2. Agricultural Aid: A country may provide agricultural aid to another country, but require that the recipient country purchase seeds, fertilizer, and other agricultural inputs from the donor country.
3. Infrastructure Aid: A country may provide infrastructure aid to another country, but require that the recipient country purchase construction materials, machinery, and other inputs from the donor country.
4. Technical Assistance: A country may provide technical assistance to another country, but require that the recipient country hire experts from the donor country to provide the technical support.

Tied aid can have both positive and negative impacts on the recipient country. On the one hand, it can support the economic development of the donor country, by providing export opportunities and creating jobs. On the other hand, tied aid can limit the ability of the recipient country to choose the most cost-effective or suitable option, and may lead to a dependence on the donor country for future development.

Overall, tied aid is a controversial form of aid, with some proponents arguing that it helps to build partnerships and strengthen economic ties between countries, while others argue that it undermines the effectiveness and efficiency of aid and limits the ability of recipient countries to make their own choices about how to spend their resources.